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levodopa


Generic Name: levodopa (lee voe DOE pa)

Brand names: Larodopa, Dopar


What is levodopa?

Levodopa is a medication used to treat Parkinson's disease. Parkinson's disease is associated with low levels of a chemical called dopamine (doe PA meen) in the brain. Levodopa is turned into dopamine in the body and therefore increases levels of this chemical.


Levodopa is used to treat the stiffness, tremors, spasms, and poor muscle control of Parkinson's disease. Levodopa is also used to treat these same muscular conditions when they are caused by drugs such as chlorpromazine (Thorazine), fluphenazine (Prolixin), perphenazine (Trilafon), and others.


Levodopa may also be used for purposes other than those listed in this medication guide.


What is the most important information I should know about levodopa?


Contact your doctor immediately if you experience uncontrollable movements of the face, eyelids, mouth, tongue, neck, arms, hands, or legs; severe or persistent nausea or vomiting; an irregular heartbeat or fluttering in the chest; or unusual changes in mood or behavior.


Use caution when driving, operating machinery, or performing other hazardous activities. Levodopa may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.

What should I discuss with my healthcare provider before taking levodopa?


Do not take levodopa if you have taken a monoamine oxidase inhibitor (MAOI), such as isocarboxazid (Marplan), tranylcypromine (Parnate), or phenelzine (Nardil) withinin the past 2 weeks. Do not take levodopa without first talking to your doctor if you have

  • narrow-angle glaucoma (angle closure glaucoma), or




  • malignant melanoma (a type of skin cancer).



Before taking this medication, tell your doctor if you have



  • any kind of heart disease, including high blood pressure, arteriosclerosis, hardening of the arteries, a previous heart attack, or an irregular heartbeat;




  • respiratory disease, including asthma and chronic obstructive pulmonary disease (COPD);



  • liver disease;

  • kidney disease;


  • an endocrine (hormonal) disease;




  • a stomach or intestinal ulcer;




  • wide-angle glaucoma; or




  • depression or any other psychiatric disorder.



You may need a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.


It is not known whether levodopa will be harmful to an unborn baby. Do not take levodopa without first talking to your doctor if you are pregnant or could become pregnant during treatment. It is not known whether levodopa will be harmful to a nursing infant. Do not take levodopa without first talking to your doctor if you are breast-feeding a baby.

How should I take levodopa?


Take levodopa exactly as directed by your doctor. If you do not understand these directions, ask your pharmacist, nurse, or doctor to explain them to you.


Take each dose with a full glass of water. Levodopa is usually taken several times a day with food. Follow your doctor's instructions.

It is important to take levodopa regularly to get the most benefit.


It may be several weeks or months before the benefits of levodopa are seen. Do not stop taking levodopa without first talking to your doctor.


Your doctor may want you to have blood tests or other medical evaluations during treatment with levodopa to monitor progress and side effects.


Store levodopa at room temperature away from moisture and heat.

See also: Levodopa dosage (in more detail)

What happens if I miss a dose?


Take the missed dose as soon as you remember. However, if it is almost time for the next dose, skip the missed dose and only take the next regularly scheduled dose. Do not take a double dose of this medication.


What happens if I overdose?


Seek emergency medical attention if an overdose is suspected.

Symptoms of a levodopa overdose include nausea, diarrhea, vomiting, weakness, fainting, confusion, hallucinations, muscle twitching, and agitation.


What should I avoid while taking levodopa?


Use caution when driving, operating machinery, or performing other hazardous activities. Levodopa may cause dizziness or drowsiness. If you experience dizziness or drowsiness, avoid these activities.

Avoid vitamin products that contain vitamin B6 (pyridoxine). This vitamin may reduce the effectiveness of levodopa.


Levodopa side effects


If you experience any of the following serious side effects, stop taking levodopa and seek emergency medical attention or contact your doctor immediately:

  • an allergic reaction (difficulty breathing; closing of the throat; swelling of the lips, tongue, or face; or hives);




  • uncontrolled movements of a part of the body;




  • seizures;




  • persistent nausea, vomiting, or diarrhea;




  • an irregular heartbeat or fluttering in the chest;




  • unusual changes in mood or behavior; or




  • depression or suicidal thoughts.



Other, less serious side effects may be more likely to occur. Continue to take levodopa and talk to your doctor if you experience



  • mild nausea, vomiting, or decreased appetite;




  • constipation, dry mouth, or blurred vision;




  • hand tremor;




  • muscle twitches;




  • dizziness or drowsiness;




  • insomnia, confusion, or nightmares;




  • agitation or anxiety;




  • darkening of the urine or sweat; or




  • fatigue.



Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. You may report side effects to FDA at 1-800-FDA-1088.


Levodopa Dosing Information


Usual Adult Dose for Parkinson's Disease:

Initial: 250 to 500 mg orally twice a day with meals.
Maintenance: 3000 to 6000 mg/day in 3 or more divided doses.

Usual Adult Dose for Restless Legs Syndrome:

50 mg orally 1 to 2 hours before bedtime (administered with a dopa-decarboxylase inhibitor)


What other drugs will affect levodopa?


Do not take levodopa if you have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), tranylcypromine (Parnate), or phenelzine (Nardil) within the past 2 weeks.

Antacids may increase the effectiveness of levodopa and lead to side effects. Ask your doctor about the use of antacids.


Tell your doctor if you are taking a medicine to treat high blood pressure (hypertension). Drugs taken to treat high blood pressure may be more effective when taken with levodopa, and very low blood pressure could result.


Many drugs may decrease the effects of levodopa. Tell your doctor if you are taking any of the following medicines:



  • drugs used to treat seizures, such as phenytoin (Dilantin), ethotoin (Peganone), and mephenytoin (Mesantoin);




  • papaverine (Pavabid, Cerespan, others);




  • pyridoxine or vitamin B6;




  • antidepressants such as amitriptyline (Elavil), doxepin (Sinequan), nortriptyline (Pamelor), desipramine (Norpramin), and amoxapine (Asendin); or



Levodopa may interfere with diabetic urine tests for sugar and ketones. If you are diabetic and notice changes in your urine test results, talk to your doctor before making any changes in your diabetes medication.


Drugs other than those listed here may also interact with levodopa. Talk to your doctor and pharmacist before taking any prescription or over-the-counter medicines, including vitamins, minerals, and herbal products.



More levodopa resources


  • Levodopa Side Effects (in more detail)
  • Levodopa Dosage
  • Levodopa Use in Pregnancy & Breastfeeding
  • Levodopa Drug Interactions
  • Levodopa Support Group
  • 0 Reviews for Levodopa - Add your own review/rating


  • levodopa Advanced Consumer (Micromedex) - Includes Dosage Information

  • Levodopa Professional Patient Advice (Wolters Kluwer)

  • Levodopa/Carbidopa Monograph (AHFS DI)



Compare levodopa with other medications


  • Parkinson's Disease
  • Periodic Limb Movement Disorder
  • Restless Legs Syndrome


Where can I get more information?


  • Your pharmacist has more information about levodopa written for health professionals that you may read.

See also: levodopa side effects (in more detail)


Lodrane 24 24-Hour Sustained-Release Capsules


Pronunciation: brome-fen-EER-a-meen
Generic Name: Brompheniramine
Brand Name: Lodrane 24


Lodrane 24 24-Hour Sustained-Release Capsules are used for:

Treating and preventing symptoms of hay fever, other allergies, and colds. It may also be used for other conditions as determined by your doctor.


Lodrane 24 24-Hour Sustained-Release Capsules are an antihistamine. It works by blocking the action of histamine, a chemical released during allergic reactions.


Do NOT use Lodrane 24 24-Hour Sustained-Release Capsules if:


  • you are allergic to any ingredient in Lodrane 24 24-Hour Sustained-Release Capsules

  • you are breast-feeding

  • you have narrow-angle glaucoma, or a peptic or stomach ulcer

  • you are unable to urinate or you are having an asthma attack

  • you are taking sodium oxybate (GHB) or you have taken a monoamine oxidase (MAO) inhibitor (eg, phenelzine) in the past 14 days

Contact your doctor or health care provider right away if any of these apply to you.



Before using Lodrane 24 24-Hour Sustained-Release Capsules:


Some medical conditions may interact with Lodrane 24 24-Hour Sustained-Release Capsules. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:


  • if you are pregnant, planning to become pregnant, or are breast-feeding

  • if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement

  • if you have allergies to medicines, foods, or other substances

  • if you have an enlarged prostate, difficulty urinating or severe constipation

  • if you have an overactive thyroid, asthma, increased pressure in the eyes, glaucoma, heart disease, or high blood pressure

Some MEDICINES MAY INTERACT with Lodrane 24 24-Hour Sustained-Release Capsules. Tell your health care provider if you are taking any other medicines, especially any of the following:


  • Barbiturates (eg, phenobarbital), MAO inhibitors (eg, phenelzine), sodium oxybate (GHB), or tricyclic antidepressants (eg, amitriptyline) because the risk of severe drowsiness may be increased

This may not be a complete list of all interactions that may occur. Ask your health care provider if Lodrane 24 24-Hour Sustained-Release Capsules may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.


How to use Lodrane 24 24-Hour Sustained-Release Capsules:


Use Lodrane 24 24-Hour Sustained-Release Capsules as directed by your doctor. Check the label on the medicine for exact dosing instructions.


  • Lodrane 24 24-Hour Sustained-Release Capsules may be taken with food if it upsets your stomach.

  • Swallow whole. Do not break, crush, or chew before swallowing.

  • If you miss a dose of Lodrane 24 24-Hour Sustained-Release Capsules, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.

Ask your health care provider any questions you may have about how to use Lodrane 24 24-Hour Sustained-Release Capsules.



Important safety information:


  • Lodrane 24 24-Hour Sustained-Release Capsules may cause dizziness or drowsiness. Do not drive, operate machinery, or do anything else that could be dangerous until you know how you react to Lodrane 24 24-Hour Sustained-Release Capsules. Using Lodrane 24 24-Hour Sustained-Release Capsules alone, with certain other medicines, or with alcohol may lessen your ability to drive or to perform other potentially dangerous tasks.

  • Avoid drinking alcohol or taking other medicines that cause drowsiness (eg, sedatives, tranquilizers) while taking Lodrane 24 24-Hour Sustained-Release Capsules. Lodrane 24 24-Hour Sustained-Release Capsules will add to the effects of alcohol and other depressants. Ask your pharmacist if you have questions about which medicines are depressants.

  • Risk of side effects may be increased with high doses or prolonged use. Do NOT exceed the recommended dose or take Lodrane 24 24-Hour Sustained-Release Capsules for longer than prescribed without checking with your doctor.

  • Use Lodrane 24 24-Hour Sustained-Release Capsules with caution in the ELDERLY because they may be more sensitive to its effects, especially dizziness, drowsiness, dry mouth, and trouble urinating.

  • Use Lodrane 24 24-Hour Sustained-Release Capsules with extreme caution in CHILDREN. Safety and effectiveness have not been confirmed.

  • Lodrane 24 24-Hour Sustained-Release Capsules may interfere with results of some lab tests, including allergy skin tests. Inform lab attendants that you are taking Lodrane 24 24-Hour Sustained-Release Capsules.

  • PREGNANCY and BREAST-FEEDING: It is unknown if Lodrane 24 24-Hour Sustained-Release Capsules can cause harm to the fetus. If you become pregnant while taking Lodrane 24 24-Hour Sustained-Release Capsules, discuss with your doctor the benefits and risks of using Lodrane 24 24-Hour Sustained-Release Capsules during pregnancy. It is unknown if Lodrane 24 24-Hour Sustained-Release Capsules are excreted in breast milk. Do not breast-feed while taking Lodrane 24 24-Hour Sustained-Release Capsules.


Possible side effects of Lodrane 24 24-Hour Sustained-Release Capsules:


All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:



Dizziness; drowsiness; dry mouth, throat, and nose; thickening of mucus in nose or throat.



Seek medical attention right away if any of these SEVERE side effects occur:

Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); fast or irregular heartbeat; fever; mental or mood changes; shortness of breath; sore throat; unusual bleeding or bruising; unusual tiredness or weakness.



This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. To report side effects to the appropriate agency, please read the Guide to Reporting Problems to FDA.


See also: Lodrane 24 side effects (in more detail)


If OVERDOSE is suspected:


Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center, or emergency room immediately. Symptoms may include bizarre behavior; constipation; enlarged pupils; excitement; flushing; hallucinations; seizures; severe dizziness; severe drowsiness.


Proper storage of Lodrane 24 24-Hour Sustained-Release Capsules:

Store Lodrane 24 24-Hour Sustained-Release Capsules at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Keep Lodrane 24 24-Hour Sustained-Release Capsules out of the reach of children and away from pets.


General information:


  • If you have any questions about Lodrane 24 24-Hour Sustained-Release Capsules, please talk with your doctor, pharmacist, or other health care provider.

  • Lodrane 24 24-Hour Sustained-Release Capsules are to be used only by the patient for whom it is prescribed. Do not share it with other people.

  • If your symptoms do not improve or if they become worse, check with your doctor.

  • Check with your pharmacist about how to dispose of unused medicine.

This information is a summary only. It does not contain all information about Lodrane 24 24-Hour Sustained-Release Capsules. If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.



Issue Date: February 1, 2012

Database Edition 12.1.1.002

Copyright © 2012 Wolters Kluwer Health, Inc.

More Lodrane 24 resources


  • Lodrane 24 Side Effects (in more detail)
  • Lodrane 24 Use in Pregnancy & Breastfeeding
  • Lodrane 24 Drug Interactions
  • Lodrane 24 Support Group
  • 6 Reviews for Lodrane 24 - Add your own review/rating


Compare Lodrane 24 with other medications


  • Allergic Reactions
  • Cold Symptoms
  • Hay Fever
  • Urticaria

Lansoprazole




FULL PRESCRIBING INFORMATION

Indications and Usage for Lansoprazole



Short-Term Treatment of Active Duodenal Ulcer


Lansoprazole delayed-release capsules are indicated for short-term treatment (for 4 weeks) for healing and symptom relief of active duodenal ulcer. [See Clinical Studies (14).]



H. pylori Eradication to Reduce the Risk of Duodenal Ulcer Recurrence


Triple Therapy

Lansoprazole/amoxicillin/clarithromycin


Lansoprazole delayed-release capsules in combination with amoxicillin plus clarithromycin as triple therapy is indicated for the treatment of patients with H. pylori infection and duodenal ulcer disease (active or one year history of a duodenal ulcer) to eradicate H. pylori. Eradication of H. pylori has been shown to reduce the risk of duodenal ulcer recurrence [see Clinical Studies (14)].


Please refer to the full prescribing information for amoxicillin and clarithromycin.


Dual Therapy

Lansoprazole/amoxicillin


Lansoprazole delayed-release capsules in combination with amoxicillin as dual therapy is indicated for the treatment of patients with H. pylori infection and duodenal ulcer disease (active or one year history of a duodenal ulcer) who are either allergic or intolerant to clarithromycin or in whom resistance to clarithromycin is known or suspected (see the clarithromycin package insert, MICROBIOLOGY section). Eradication of H. pylori has been shown to reduce the risk of duodenal ulcer recurrence [see Clinical Studies (14)].


Please refer to the full prescribing information for amoxicillin.



Maintenance of Healed Duodenal Ulcers


Lansoprazole delayed-release capsules are indicated to maintain healing of duodenal ulcers. Controlled studies do not extend beyond 12 months. [See Clinical Studies (14).]



Short-Term Treatment of Active Benign Gastric Ulcer


Lansoprazole delayed-release capsules are indicated for short-term treatment (up to 8 weeks) for healing and symptom relief of active benign gastric ulcer. [See Clinical Studies (14).]



Healing of NSAID-Associated Gastric Ulcer


Lansoprazole delayed-release capsules are indicated for the treatment of NSAID-associated gastric ulcer in patients who continue NSAID use. Controlled studies did not extend beyond 8 weeks. [See Clinical Studies (14).]



Risk Reduction of NSAID-Associated Gastric Ulcer


Lansoprazole delayed-release capsules are indicated for reducing the risk of NSAID-associated gastric ulcers in patients with a history of a documented gastric ulcer who require the use of an NSAID. Controlled studies did not extend beyond 12 weeks. [See Clinical Studies (14).]



Gastroesophageal Reflux Disease (GERD)


Short-Term Treatment of Symptomatic GERD

Lansoprazole delayed-release capsules are indicated for the treatment of heartburn and other symptoms associated with GERD. [See Clinical Studies (14).]


Short-Term Treatment of Erosive Esophagitis

Lansoprazole delayed-release capsules are indicated for short-term treatment (up to 8 weeks) for healing and symptom relief of all grades of erosive esophagitis. For patients who do not heal with Lansoprazole delayed-release capsules for 8 weeks (5% to 10%), it may be helpful to give an additional 8 weeks of treatment. If there is a recurrence of erosive esophagitis an additional 8-week course of Lansoprazole delayed-release capsules may be considered. [See Clinical Studies (14).]



Maintenance of Healing of Erosive Esophagitis (EE)


Lansoprazole delayed-release capsules are indicated to maintain healing of erosive esophagitis. Controlled studies did not extend beyond 12 months. [See Clinical Studies (14).]



Pathological Hypersecretory Conditions Including Zollinger-Ellison Syndrome (ZES)


Lansoprazole delayed-release capsules are indicated for the long-term treatment of pathological hypersecretory conditions, including Zollinger-Ellison syndrome. [See Clinical Studies (14).]



Lansoprazole Dosage and Administration


Lansoprazole delayed-release capsules are available as capsules in 15 mg and 30 mg strengths. Directions for use specific to the route and available methods of administration is presented below. Lansoprazole delayed-release capsules should be taken before eating. Lansoprazole delayed-release capsules SHOULD NOT BE CRUSHED OR CHEWED. In the clinical trials, antacids were used concomitantly with Lansoprazole.



Recommended Dose


































































































*

Please refer to amoxicillin and clarithromycin full prescribing information for CONTRAINDICATIONS and WARNINGS, and for information regarding dosing in elderly and renally-impaired patients.


Controlled studies did not extend beyond indicated duration.


For patients who do not heal with Lansoprazole for 8 weeks (5% to 10%), it may be helpful to give an additional 8 weeks of treatment. If there is a recurrence of erosive esophagitis, an additional 8 week course of Lansoprazole may be considered.

§

The Lansoprazole dose was increased (up to 30 mg twice daily) in some pediatric patients after 2 or more weeks of treatment if they remained symptomatic. For pediatric patients unable to swallow an intact capsule please see Administration Options.


Varies with individual patient. Recommended adult starting dose is 60 mg once daily. Doses should be adjusted to individual patient needs and should continue for as long as clinically indicated. Dosages up to 90 mg twice daily have been administered. Daily dose of greater than 120 mg should be administered in divided doses. Some patients with Zollinger-Ellison Syndrome have been treated continuously with Lansoprazole for more than 4 years.

IndicationRecommendedFrequency
Dose
Duodenal Ulcers 
   Short-Term Treatment15 mgOnce daily for 4 weeks
     Maintenance of Healed15 mgOnce daily
H. pylori Eradication to Reduce the Risk of Duodenal Ulcer Recurrence*
     Triple Therapy:
          Lansoprazole Delayed-release Capsules30 mgTwice daily (q12h) for 10 or 14 days
          Amoxicillin1 gramTwice daily (q12h) for 10 or 14 days
          Clarithromycin500 mgTwice daily (q12h) for 10 or 14 days
     Dual Therapy:
          Lansoprazole Delayed-release Capsules30 mgThree times daily (q8h) for 14 days
          Amoxicillin1 gramThree times daily (q8h) for 14 days
Benign Gastric Ulcer
     Short-Term Treatment30 mgOnce daily for up to 8 weeks
NSAID-associated Gastric Ulcer
     Healing30 mgOnce daily for 8 weeks
     Risk Reduction15 mgOnce daily for up to 12 weeks
Gastroesophageal Reflux Disease (GERD)
     Short-Term Treatment of Symptomatic GERD15 mgOnce daily for up to 8 weeks
     Short -Term Treatment of Erosive Esophagitis30 mgOnce daily for up to 8 weeks
Pediatric
(1 to 11 years of age)
Short-Term Treatment of Symptomatic GERD and Short-Term Treatment of Erosive Esophagitis
     ≤ 30 kg15 mgOnce daily for up to 12 weeks§
     > 30 kg30 mgOnce daily for up to 12 weeks§
(12 to 17 years of age)
Short-Term Treatment of Symptomatic GERD
     Nonerosive GERD15 mgOnce daily for up to 8 weeks
     Erosive Esophagitis30 mgOnce daily for up to 8 weeks
Maintenance of Healing of Erosive Esophagitis15 mgOnce daily
Pathological Hypersecretory Conditions Including Zollinger-Ellison Syndrome60 mgOnce daily

Patients should be instructed that if a dose is missed, it should be taken as soon as possible. However, if the next scheduled dose is due, the patient should not take the missed dose and should be instructed to take the next dose on time. Patients should be instructed not to take two doses at one time to make up for a missed dose.



Special Populations


Renal impairment patients and geriatric patients do not require dosage adjustment. However, consider dose adjustment in patients with severe liver impairment. [See Use in Specific Populations (8.5, 8.6 and 8.7).]



Important Administration Information


Administration Options

Lansoprazole Delayed-release Capsules -Oral Administration


  • Lansoprazole delayed-release capsules should be swallowed whole.

  • Alternatively, for patients who have difficulty swallowing capsules, Lansoprazole delayed-release capsules can be opened and administered as follows:
    • Open capsule.

    • Sprinkle intact pellets on one tablespoon of either applesauce, ENSURE® pudding, cottage cheese, yogurt or strained pears.

    • Swallow immediately.


  • Lansoprazole delayed-release capsules may also be emptied into a small volume of either apple juice, orange juice or tomato juice and administered as follows:
    • Open capsule.

    • Sprinkle intact pellets into a small volume of either apple juice, orange juice or tomato juice (60 mL – approximately 2 ounces).

    • Mix briefly.

    • Swallow immediately.

    • To ensure complete delivery of the dose, the glass should be rinsed with two or more volumes of juice and the contents swallowed immediately.


Lansoprazole Delayed-release Capsules -Nasogastric Tube (≥ 16 French) Administration


  • For patients who have a nasogastric tube in place, Lansoprazole delayed-release capsules can be administered as follows:
    • Open capsule.

    • Mix intact pellets into 40 mL of apple juice. DO NOT USE OTHER LIQUIDS.

    • Inject through the nasogastric tube into the stomach.

    • Flush with additional apple juice to clear the tube.


USE IN OTHER FOODS AND LIQUIDS HAS NOT BEEN STUDIED CLINICALLY AND IS THEREFORE NOT RECOMMENDED.



Dosage Forms and Strengths


  • 15 mg capsules have a green opaque cap, green opaque body, hard-shell gelatin capsule filled with white to off-white pellets. The capsule is axially printed with MYLAN over 8015 in black ink on both the cap and body.

  • 30 mg capsules have a pink opaque cap, pink opaque body, hard-shell gelatin capsule filled with white to off-white pellets. The capsule is axially printed with MYLAN over 8030 in black ink on both the cap and the body.


Contraindications


Lansoprazole delayed-release capsules are contraindicated in patients with known severe hypersensitivity to any component of the formulation of Lansoprazole. For information on contraindications for amoxicillin or clarithromycin, refer to their full prescribing information, CONTRAINDICATIONS sections.



Warnings and Precautions



Gastric Malignancy


Symptomatic response to therapy with Lansoprazole does not preclude the presence of gastric malignancy.



Bone Fracture


 Several published observational studies suggest that proton pump inhibitor (PPI) therapy may be associated with an increased risk for osteoporosis-related fractures of the hip, wrist or spine. The risk of fracture was increased in patients who received high-dose, defined as multiple daily doses, and long-term PPI therapy (a year or longer). Patients should use the lowest dose and shortest duration of PPI therapy appropriate to the condition being treated. Patients at risk for osteoporosis-related fractures should be managed according to established treatment guidelines [see Dosage and Administration (2) and Adverse Reactions (6.2)].


 For information on warnings and precautions for amoxicillin or clarithromycin, refer to their full prescribing information, WARNINGS and PRECAUTIONS sections.



Hypomagnesemia


 Hypomagnesemia, symptomatic and asymptomatic, has been reported rarely in patients treated with PPIs for at least 3 months, in most cases after a year of therapy. Serious adverse events include tetany, arrhythmias and seizures. In most patients, treatment of hypomagnesemia required magnesium replacement and discontinuation of the PPI.


 For patients expected to be on prolonged treatment or who take PPIs with medications such as digoxin or drugs that may cause hypomagnesemia (e.g., diuretics), health care professionals may consider monitoring magnesium levels prior to initiation of PPI treatment and periodically [see Adverse Reactions (6.2)].



Adverse Reactions



Clinical


Worldwide, over 10,000 patients have been treated with Lansoprazole in Phase 2 or Phase 3 clinical trials involving various dosages and durations of treatment. In general, Lansoprazole treatment has been well tolerated in both short-term and long-term trials.


Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice.


The following adverse reactions were reported by the treating physician to have a possible or probable relationship to drug in 1% or more of Lansoprazole-treated patients and occurred at a greater rate in Lansoprazole-treated patients than placebo-treated patients in Table 1.































Table 1. Incidence of Possibly or Probably Treatment-Related Adverse Reactions in Short-Term, Placebo-Controlled Lansoprazole Studies
LansoprazolePlacebo
(N = 2,768)(N = 1,023)
Body System/Adverse Event%%
Body as a Whole
     Abdominal Pain2.11.2
Digestive System
     Constipation10.4
     Diarrhea3.82.3
     Nausea1.31.2

 


Headache was also seen at greater than 1% incidence but was more common on placebo. The incidence of diarrhea was similar between patients who received placebo and patients who received 15 mg and 30 mg of Lansoprazole, but higher in the patients who received 60 mg of Lansoprazole (2.9%, 1.4%, 4.2% and 7.4%, respectively).


The most commonly reported possibly or probably treatment-related adverse event during maintenance therapy was diarrhea.


In the risk reduction study of Lansoprazole for NSAID-associated gastric ulcers, the incidence of diarrhea for patients treated with Lansoprazole, misoprostol and placebo was 5%, 22% and 3%, respectively.


Another study for the same indication, where patients took either a COX-2 inhibitor or Lansoprazole and naproxen, demonstrated that the safety profile was similar to the prior study. Additional reactions from this study not previously observed in other clinical trials with Lansoprazole included contusion, duodenitis, epigastric discomfort, esophageal disorder, fatigue, hunger, hiatal hernia, hoarseness, impaired gastric emptying, metaplasia and renal impairment.


Additional adverse experiences occurring in less than 1% of patients or subjects who received Lansoprazole in domestic trials are shown below:


Body as a Whole: abdomen enlarged, allergic reaction, asthenia, back pain, candidiasis, carcinoma, chest pain (not otherwise specified), chills, edema, fever, flu syndrome, halitosis, infection (not otherwise specified), malaise, neck pain, neck rigidity, pain, pelvic pain


Cardiovascular System: angina, arrhythmia, bradycardia, cerebrovascular accident/cerebral infarction, hypertension/hypotension, migraine, myocardial infarction, palpitations, shock (circulatory failure), syncope, tachycardia, vasodilation


Digestive System: abnormal stools, anorexia, bezoar, cardiospasm, cholelithiasis, colitis, dry mouth, dyspepsia, dysphagia, enteritis, eructation, esophageal stenosis, esophageal ulcer, esophagitis, fecal discoloration, flatulence, gastric nodules/fundic gland polyps, gastritis, gastroenteritis, gastrointestinal anomaly, gastrointestinal disorder, gastrointestinal hemorrhage, glossitis, gum hemorrhage, hematemesis, increased appetite, increased salivation, melena, mouth ulceration, nausea and vomiting, nausea and vomiting and diarrhea, gastrointestinal moniliasis, rectal disorder, rectal hemorrhage, stomatitis, tenesmus, thirst, tongue disorder, ulcerative colitis, ulcerative stomatitis


Endocrine System: diabetes mellitus, goiter, hypothyroidism


Hemic and Lymphatic System: anemia, hemolysis, lymphadenopathy


Metabolism and Nutritional Disorders: avitaminosis,  gout, dehydration, hyperglycemia/hypoglycemia, peripheral edema, weight gain/loss


Musculoskeletal System: arthralgia, arthritis, bone disorder, joint disorder, leg cramps, musculoskeletal pain, myalgia, myasthenia, ptosis, synovitis


Nervous System: abnormal dreams, agitation, amnesia, anxiety, apathy, confusion, convulsion, dementia, depersonalization, depression, diplopia, dizziness, emotional lability, hallucinations, hemiplegia, hostility aggravated, hyperkinesia, hypertonia, hypesthesia, insomnia, libido decreased/increased, nervousness, neurosis, paresthesia, sleep disorder, somnolence, thinking abnormality, tremor, vertigo


Respiratory System: asthma, bronchitis, cough increased, dyspnea, epistaxis, hemoptysis, hiccup, laryngeal neoplasia, lung fibrosis, pharyngitis, pleural disorder, pneumonia, respiratory disorder, upper respiratory inflammation/infection, rhinitis, sinusitis, stridor


Skin and Appendages: acne, alopecia, contact dermatitis, dry skin, fixed eruption, hair disorder, maculopapular rash, nail disorder, pruritus, rash, skin carcinoma, skin disorder, sweating, urticaria


Special Senses: abnormal vision, amblyopia, blepharitis, blurred vision, cataract, conjunctivitis, deafness, dry eyes, ear/eye disorder, eye pain, glaucoma, otitis media, parosmia, photophobia, retinal degeneration/disorder, taste loss, taste perversion, tinnitus, visual field defect


Urogenital System: abnormal menses, breast enlargement, breast pain, breast tenderness, dysmenorrhea, dysuria, gynecomastia, impotence, kidney calculus, kidney pain, leukorrhea, menorrhagia, menstrual disorder, penis disorder, polyuria, testis disorder, urethral pain, urinary frequency, urinary retention, urinary tract infection, urinary urgency, urination impaired, vaginitis



Post-Marketing Experience


Additional adverse experiences have been reported since Lansoprazole has been marketed. The majority of these cases are foreign-sourced and a relationship to Lansoprazole has not been established. Because these reactions were reported voluntarily from a population of unknown size, estimates of frequency cannot be made. These events are listed below by COSTART body system.


Body as a Whole: anaphylactic/anaphylactoid reactions;


Digestive System: hepatotoxicity, pancreatitis, vomiting;


Hemic and Lymphatic System:  agranulocytosis, aplastic anemia, hemolytic anemia, leukopenia, neutropenia, pancytopenia, thrombocytopenia, and thrombotic thrombocytopenic purpura;


Metabolism and Nutritional Disorders: hypomagnesemia;


Musculoskeletal System: bone fracture, myositis;


Skin and Appendages: severe dermatologic reactions including erythema multiforme, Stevens-Johnson Syndrome, toxic epidermal necrolysis (some fatal);


Special Senses: speech disorder;


Urogenital System: interstitial nephritis, urinary retention



Combination Therapy with Amoxicillin and Clarithromycin


In clinical trials using combination therapy with Lansoprazole plus amoxicillin and clarithromycin, and Lansoprazole plus amoxicillin, no adverse reactions peculiar to these drug combinations were observed. Adverse reactions that have occurred have been limited to those that had been previously reported with Lansoprazole, amoxicillin or clarithromycin.


Triple Therapy

Lansoprazole/amoxicillin/clarithromycin


The most frequently reported adverse reactions for patients who received triple therapy for 14 days were diarrhea (7%), headache (6%) and taste perversion (5%). There were no statistically significant differences in the frequency of reported adverse reactions between the 10- and 14-day triple therapy regimens. No treatment-emergent adverse reactions were observed at significantly higher rates with triple therapy than with any dual therapy regimen.


Dual Therapy

Lansoprazole/amoxicillin


The most frequently reported adverse reactions for patients who received Lansoprazole 3 times daily plus amoxicillin 3 times daily dual therapy were diarrhea (8%) and headache (7%). No treatment-emergent adverse reactions were observed at significantly higher rates with Lansoprazole 3 times daily plus amoxicillin 3 times daily dual therapy than with Lansoprazole alone.


For information on adverse reactions with amoxicillin or clarithromycin, refer to their full prescribing information, ADVERSE REACTIONS sections.



Laboratory Values


The following changes in laboratory parameters in patients who received Lansoprazole were reported as adverse reactions:


Abnormal liver function tests, increased SGOT (AST), increased SGPT (ALT), increased creatinine, increased alkaline phosphatase, increased globulins, increased GGTP, increased/decreased/abnormal WBC, abnormal AG ratio, abnormal RBC, bilirubinemia, blood potassium increased, blood urea increased, crystal urine present, eosinophilia, hemoglobin decreased, hyperlipemia, increased/decreased electrolytes, increased/decreased cholesterol, increased glucocorticoids, increased LDH, increased/decreased/abnormal platelets, increased gastrin levels and positive fecal occult blood. Urine abnormalities such as albuminuria, glycosuria, and hematuria were also reported. Additional isolated laboratory abnormalities were reported.


In the placebo controlled studies, when SGOT (AST) and SGPT (ALT) were evaluated, 0.4% (4/978) and 0.4% (11/2,677) patients, who received placebo and Lansoprazole, respectively, had enzyme elevations greater than 3 times the upper limit of normal range at the final treatment visit. None of these patients who received Lansoprazole reported jaundice at any time during the study.


In clinical trials using combination therapy with Lansoprazole plus amoxicillin and clarithromycin, and Lansoprazole plus amoxicillin, no increased laboratory abnormalities particular to these drug combinations were observed.


For information on laboratory value changes with amoxicillin or clarithromycin, refer to their full prescribing information, ADVERSE REACTIONS sections.



Drug Interactions



Drugs with pH-Dependent Absorption Kinetics


Lansoprazole causes long-lasting inhibition of gastric acid secretion. Lansoprazole and other PPIs are likely to substantially decrease the systemic concentrations of the HIV protease inhibitor atazanavir, which is dependent upon the presence of gastric acid for absorption, and may result in a loss of therapeutic effect of atazanavir and the development of HIV resistance. Therefore, Lansoprazole and other PPIs should not be coadministered with atazanavir. [See Clinical Pharmacology (12.3).]


Lansoprazole and other PPIs may interfere with the absorption of other drugs where gastric pH is an important determinant of oral bioavailability (e.g., ampicillin esters, digoxin, iron salts, ketoconazole). [See Clinical Pharmacology (12.3).] 



Warfarin


In a study of healthy subjects, coadministration of single or multiple 60 mg doses of Lansoprazole and warfarin did not affect the pharmacokinetics of warfarin nor prothrombin time [see Clinical Pharmacology (12.3)]. However, there have been reports of increased INR and prothrombin time in patients receiving PPIs and warfarin concomitantly. Increases in INR and prothrombin time may lead to abnormal bleeding and even death. Patients treated with PPIs and warfarin concomitantly may need to be monitored for increases in INR and prothrombin time. [See Clinical Pharmacology (12.3).] 



Tacrolimus


Concomitant administration of Lansoprazole and tacrolimus may increase whole blood levels of tacrolimus, especially in transplant patients who are intermediate or poor metabolizers of CYP2C19.



Theophylline


A minor increase (10%) in the clearance of theophylline was observed following the administration of Lansoprazole concomitantly with theophylline. Although the magnitude of the effect on theophylline clearance is small, individual patients may require additional titration of their theophylline dosage when Lansoprazole is started or stopped to ensure clinically effective blood levels. [See Clinical Pharmacology (12.3).] 



Clopidogrel


Concomitant administration of Lansoprazole and clopidogrel in healthy subjects had no clinically important effect on exposure to the active metabolite of clopidogrel or clopidogrel-induced platelet inhibition [see Clinical Pharmacology (12.3)]. No dose adjustment of clopidogrel is necessary when administered with an approved dose of Lansoprazole.


For information on drug interactions for amoxicillin or clarithromycin, refer to their full prescribing information, DRUG INTERACTIONS sections.



USE IN SPECIFIC POPULATIONS



Pregnancy


Teratogenic effects

Pregnancy Category B


Reproduction studies have been performed in pregnant rats at oral doses up to 40 times the recommended human dose and in pregnant rabbits at oral doses up to 16 times the recommended human dose and have revealed no evidence of impaired fertility or harm to the fetus due to Lansoprazole. There are, however, no adequate or well controlled studies in pregnant women. Because animal reproduction studies are not always predictive of human response, this drug should be used during pregnancy only if clearly needed [see Nonclinical Toxicology (13.2)].


See full prescribing information for clarithromycin before using in pregnant women.



Nursing Mothers


Lansoprazole or its metabolites are excreted in the milk of rats. It is not known whether Lansoprazole is excreted in human milk. Because many drugs are excreted in human milk, because of the potential for serious adverse reactions in nursing infants from Lansoprazole, and because of the potential for tumorigenicity shown for Lansoprazole in rat carcinogenicity studies, a decision should be made whether to discontinue nursing or to discontinue Lansoprazole, taking into account the importance of Lansoprazole to the mother.



Pediatric Use


The safety and effectiveness of Lansoprazole have been established in pediatric patients 1 to 17 years of age for short-term treatment of symptomatic GERD and erosive esophagitis.


One to 11 Years of Age

In an uncontrolled, open-label, U.S. multicenter study, 66 pediatric patients (1 to 11 years of age) with GERD were assigned, based on body weight, to receive an initial dose of either Lansoprazole 15 mg daily if < 30 kg or Lansoprazole 30 mg daily if greater than 30 kg administered for 8 to 12 weeks. The Lansoprazole dose was increased (up to 30 mg twice daily) in 24 of 66 pediatric patients after 2 or more weeks of treatment if they remained symptomatic. At baseline 85% of patients had mild to moderate overall GERD symptoms (assessed by investigator interview), 58% had non-erosive GERD and 42% had erosive esophagitis (assessed by endoscopy).


After 8 to 12 weeks of Lansoprazole treatment, the intent-to-treat analysis demonstrated an approximate 50% reduction in frequency and severity of GERD symptoms.


Twenty-one of 27 erosive esophagitis patients were healed at 8 weeks and 100% of patients were healed at 12 weeks by endoscopy (Table 2).

















Table 2. GERD Symptom Improvement and Erosive Esophagitis Healing Rates in Pediatric Patients Age 1 to 11

*

At Week 8 or Week 12


Symptoms assessed by patients diary kept by caregiver.


No data were available for four pediatric patients.

GERDFinal Visit* % (n/N)
Symptomatic GERD
     Improvement in Overall GERD Symptoms76% (47/62)
Erosive Esophagitis
     Improvement in Overall GERD Symptoms 81% (22/27)
     Healing Rate100% (27/27)

 In a study of 66 pediatric patients in the age group 1 year to 11 years old after treatment with Lansoprazole given orally in doses of 15 mg daily to 30 mg twice daily, increases in serum gastrin levels were similar to those observed in adult studies. Median fasting serum gastrin levels increased 89% from 51 pg/mL at baseline to 97 pg/mL [interquartile range (25th to 75th   percentile) of 71 to 130 pg/mL] at the final visit.


The pediatric safety of Lansoprazole delayed-release capsules has been assessed in 66 pediatric patients aged 1 to 11 years of age. Of the 66 patients with GERD 85% (56/66) took Lansoprazole for 8 weeks and 15% (10/66) took it for 12 weeks.


The most frequently reported (two or more patients) treatment-related adverse reactions in patients 1 to 11 years of age (N = 66) were constipation (5%) and headache (3%).


Twelve to 17 Years of Age

In an uncontrolled, open-label, U.S. multicenter study, 87 adolescent patients (12 to 17 years of age) with symptomatic GERD were treated with Lansoprazole for 8 to 12 weeks. Baseline upper endoscopies classified these patients into two groups: 64 (74%) nonerosive GERD and 23 (26%) erosive esophagitis (EE). The nonerosive GERD patients received Lansoprazole 15 mg daily for 8 weeks and the EE patients received Lansoprazole 30 mg daily for 8 to 12 weeks. At baseline, 89% of these patients had mild to moderate overall GERD symptoms (assessed by investigator interviews). During 8 weeks of Lansoprazole treatment, adolescent patients experienced a 63% reduction in frequency and a 69% reduction in severity of GERD symptoms based on diary results.


Twenty-one of 22 (95.5%) adolescent erosive esophagitis patients were healed after 8 weeks of Lansoprazole treatment. One patient remained unhealed after 12 weeks of treatment (Table 3).





















Table 3. GERD Symptom Improvement and Erosive Esophagitis Healing Rates in Pediatric Patients Age 12 to 17

*

Symptoms assessed by patient diary (parents/caregivers as necessary).


No data available for five patients.


Data from one healed patient was excluded from this analysis due to timing of final endoscopy.

GERDFinal Visit % (n/N)
Symptomatic GERD (All Patients)
     Improvement in Overall GERD Symptoms*73.2% (60/82)
Nonerosive GERD
     Improvement in Overall GERD Symptoms*71.2% (42/59) 
Erosive Esophagitis
     Improvement in Overall GERD Symptoms*78.3% (18/23)
     Healing Rate95.5% (21/22)

 


In these 87 adolescent patients, increases in serum gastrin levels were similar to those observed in adult studies, median fasting serum gastrin levels increased 42% from 45 pg/mL at baseline to 64 pg/mL [interquartile range (25th   to 75th   percentile) of 44 to 88 pg/mL] at the final visit. (Normal serum gastrin levels are 25 to 111 pg/mL).


The safety of Lansoprazole delayed-release capsules has been assessed in these 87 adolescent patients. Of the 87 adolescent patients with GERD, 6% (5/87) took Lansoprazole for less than 6 weeks, 93% (81/87) for 6 to 10 weeks, and 1% (1/87) for greater than 10 weeks.


The most frequently reported (at least 3%) treatment-related adverse reactions in these patients were headache (7%), abdominal pain (5%), nausea (3%) and dizziness (3%). Treatment-related dizziness, reported in this package insert as occurring in less than 1% of adult patients, was reported in this study by three adolescent patients with nonerosive GERD, who had dizziness concurrently with other reactions (such as migraine, dyspnea and vomiting).



Geriatric Use


No dosage adjustment of Lansoprazole is necessary in geriatric patients. The incidence rates of Lansoprazole-associated adverse reactions and laboratory test abnormalities are similar to those seen in younger patients. [See Clinical Pharmacology (12.3).]



Renal Impairment


No dosage adjustment of Lansoprazole is necessary in patients with renal impairment. The pharmacokinetics of Lansoprazole in patients with various degrees of renal impairment were not substantially different compared to those in subjects with normal renal function. [See Clinical Pharmacology (12.3).]



Hepatic Impairment


In patients with various degrees of chronic hepatic impairment, an increase in the mean AUC of up to 500% was observed at steady-state compared to healthy subjects. Consider dose reduction in patients with severe hepatic impairment. [See Clinical Pharmacology (12.3).]



Gender


Over 4,000 women were treated with Lansoprazole. Ulcer healing rates in females were similar to those in males. The incidence rates of adverse reactions in females were similar to those seen in males. [See Clinical Pharmacology (12.3).]



Race


The pooled mean pharmacokinetic parameters of Lansoprazole from 12 U.S. Phase 1 studies (N = 513) were compared to the mean pharmacokinetic parameters from two Asian studies (N = 20). The mean AUCs of Lansoprazole in Asian subjects were approximately twice those seen in pooled U.S. data; however, the inter-individual variability was high. The Cmax values were comparable.


Friday, October 7, 2016

Levophed Bitartrate


Generic Name: Norepinephrine Bitartrate
Class: alpha- and beta-Adrenergic Agonists
VA Class: AU100
CAS Number: 69815-49-2

Introduction

Norepinephrine is identical to the endogenous catecholamine that is synthesized in the adrenal medulla and in sympathetic nervous tissue; norepinephrine predominantly acts by a direct effect on α-adrenergic receptors.b


Uses for Levophed Bitartrate


Shock


Used to produce vasoconstriction and cardiac stimulation as an adjunct to correct hemodynamic imbalances in the treatment of shock that persists after adequate fluid volume replacement.b (See Hypovolemia under Cautions.)


If severe peripheral vasoconstriction exists, norepinephrine may be ineffective and may have a deleterious effect by causing further reductions in plasma volume and blood flow to vital organs.b


Value of pressor therapy in shock, especially when due to septicemia, burns, trauma, or drug overdosage, is questionable, either because the effectiveness has not been proved or because vasoconstriction caused by the drug may adversely affect the patient.b


May be indicated if patient fails to respond to administration of fluids, a change in position, or other measures directed to the specific cause of shock such as anti-infectives in septicemia, epinephrine in anaphylactic shock, or specific antidotes and/or removal of the drug in cases of drug overdosage.b


May be considered in the treatment of drug-induced distributive shock or shock associated with calcium-channel or β-adrenergic blocking agent toxicity.100


Pressor therapy in overdosage of barbiturates or other sedatives is especially controversial; some clinicians have stated that the incidence of mortality may actually be increased when a pressor is given.b


May be useful to control shock following pheochromocytomectomy, but shock generally can be prevented by maintenance of adequate blood volume and/or preoperative administration of an α-adrenergic blocking agent.b


May be used as an adjunct in the management of shock resulting from sympathectomy or poliomyelitis.b


Anaphylactic Shock


Epinephrine is the drug of choice in the emergency treatment of severe acute anaphylactic reactions, including anaphylactic shock.b


Once adequate ventilation is assured, maintenance of blood pressure in patients with anaphylactic shock may be achieved with other pressor agents, such as norepinephrine.b


MI


In hypotension associated with MI, cautious administration of norepinephrine may be of value and some clinicians consider it to be the pressor drug of choice.b


This type of shock generally has a poor prognosis even when pressor agents are used, and norepinephrine-induced increases in myocardial oxygen demand and the work of the heart may outweigh the beneficial effects of the drug.b


Cardiac arrhythmias due to norepinephrine are more likely to occur in patients with MI.b


CPR


May be used for ACLS as an adjunct to maintain adequate BP when severe hypotension (e.g., SBP <70 mm Hg) and low total peripheral resistance persist (unresponsive to less potent adrenergic drugs, including dopamine, methoxamine, or phenylephrine) and renal and cerebral perfusion remain inadequate after an effective heartbeat, palpable pulse, and ventilation have been established by other means.100 b


Exhibits both positive inotropic and vasoconstrictive activity; therefore, may be particularly useful in elevating systolic arterial pressures to 70–100 mm Hg.b Once such elevations are achieved, dopamine therapy can be initiated.b


Relatively contraindicated in patients with hypovolemia.100 b


Use cautiously in patients with ischemic heart disease because it may increase myocardial oxygen requirements.100 b


Hypotension during Anesthesia


May be used to treat hypotension occurring during spinal anesthesia, but other vasopressors having a longer duration of action and which can be administered IM such as metaraminol, methoxamine, or phenylephrine are more commonly used.b


May be used to treat hypotension occurring during general anesthesia; however, the possibility of cardiac arrhythmias should be considered.b (See Specific Drugs under Interactions.)


If a vasopressor is required, norepinephrine should not be used in obstetric patients (see Pregnancy under Cautions); ephedrine usually is preferred.b


Adjunct to Local Anesthesia


May be added to solutions of some local anesthetics to decrease the rate of vascular absorption of the anesthetic, thereby localizing anesthesia and prolonging the duration of anesthesia.b


Decreases risk of systemic toxicity due to the local anesthetic.b


Not as potent as epinephrine and must be used in higher concentrations to prolong local anesthetic effects; epinephrine is more commonly used for this purpose.b


GI Hemorrhage


Has been used with some success intraperitoneally or via a nasogastric tube as a hemostatic agent for severe upper GI bleeding.b


Pericardial Tamponade


Has been used to increase cardiac output by increasing ventricular emptying and temporarily increasing cardiac filling pressure in pericardial tamponade.b


Levophed Bitartrate Dosage and Administration


General



  • Observe the effect of the initial dose on BP carefully and adjust the rate of flow to establish and maintain the desired BP.b




  • Do not leave the patient unattended; must closely monitor the infusion flow rate.b




  • Check BP every 2 minutes from the time the norepinephrine infusion is started until the desired effect is achieved, then every 5 minutes while the drug is being infused.b




  • Elevate BP to slightly less than the patient’s normal BP.b




  • In previously normotensive patients, maintain SBP at 80–100 mm Hg; in previously hypertensive patients, maintain SBP at 30–40 mm Hg below their preexisting BP.b




  • Very severe hypotension: Maintenance of even lower BP may be desirable if blood or fluid volume replacement has not been completed.b




  • Continue therapy until adequate BP and tissue perfusion are maintained.b




  • Discontinuing therapy: Slow infusion rate gradually and avoid abrupt withdrawal; observe patient carefully so that therapy may be resumed if the BP falls too rapidly.b




  • In some patients, additional administration of IV fluids may be necessary before norepinephrine can be discontinued.




  • Do not reinstate pressor therapy until the SBP falls to 70–80 mm Hg.b



Administration


Administer by IV infusion.b


IV Administration


For solution and drug compatibility information, see Compatibility under Stability.


Administer by IV infusion using an infusion pump or other apparatus to control the rate of flow.b


Infuse into the antecubital vein of the arm if possible, although the femoral vein may also be used.b (See Extravasation under Cautions.)


Administer through a plastic catheter inserted deep into the vein.b


A catheter tie-in technique should be avoided if possible because obstruction of blood flow around the tubing may cause stasis and increased local concentration of the drug.b


Should not be administered in the same IV line as alkaline solutions, which may inactivate the drug.100


Care must be taken to avoid extravasation because local necrosis may result.b 100 (See Extravasation and also Extravasation Treatment under Cautions for discussion on the prevention and treatment of the adverse effects of extravasation.)


In prolonged therapy, change the injection site periodically.b


Dilution

Prior to administration, dilute the commercially available concentrate for injection with 5% dextrose injection, with or without sodium chloride.100 b


Concentration of norepinephrine and the infusion rate depend on the drug and fluid requirements of the individual patientb


Infusion solution usually prepared by adding 4 mg of norepinephrine (4 mL of the commercially available injection) to 1 L of 5% dextrose injection creating a resultant solution containing 4 mcg/mL;b a more dilute or concentrated solution may be prepared depending on the fluid volume requirements of the patient.100 b


Dosage


Available as norepinephrine bitartrate; dosage expressed in terms of norepinephrine (2 mg of norepinephrine bitartrate is equivalent to 1 mg of norepinephrine).100 b


Pediatric Patients


Shock

Administer in the lowest effective dosage for the shortest possible time.b


IV

Usually administered at a rate of 2 mcg/minute; alternatively, 2 mcg/m2 per minute.b


Pediatric Advanced Life Support (PALS) during CPR

IV

Infusion rate: 0.1–2 mcg/kg per minute; adjust to achieve the desired change in BP and perfusion.100 b


Adults


Shock

Administer in the lowest effective dosage for the shortest possible time.b


IV

Usual initial dosage: 8–12 mcg/minute; alternatively, some clinicians suggest initiating norepinephrine therapy at a dosage of 0.5–1 mcg/minute titrated to effect.b 100


Average adult maintenance dosage: 2–4 mcg/minute.b


Refractory Shock

IV

May require 8–30 mcg/minute.b


GI Hemorrhage

Intraperitoneal

8 mg of norepinephrine in 250 mL of 0.9% sodium chloride injection has been administered intraperitoneally to control upper GI bleeding.b


Nasogastric

8 mg of norepinephrine in 100 mL of 0.9% sodium chloride solution has been instilled through a nasogastric tube every hour for 6–8 hours, then every 2 hours for 4–6 hours to control upper GI bleeding; frequency of administration was then gradually reduced until the drug was discontinued.b


Special Populations


Geriatric Patients


Has not been evaluated systematically in those 65 years of age and older, but the manufacturers currently do not make specific dosage recommendations for geriatric patients.b


If used in geriatric patients, initial dosage usually should be at the low end of the dosage range and caution should be exercised since renal, hepatic, and cardiovascular dysfunction and concomitant disease or other drug therapy are more common in this age group than in younger patients.b


Cautions for Levophed Bitartrate


Contraindications



  • Generally, contraindicated during anesthesia with cyclopropane or halogenated hydrocarbon general anesthetics.b (See Specific Drugs under Interactions.)




  • Use in patients with profound hypoxia or hypercapnia may be contraindicated.b (See Arrhythmias under Cautions.)




  • In conjunction with local anesthetics, use in fingers, toes, ears, nose, or genitalia is contraindicated.b



Warnings/Precautions


Warnings


Hypovolemia

Pressor therapy is not a substitute for replacement of blood, plasma, fluids, and/or electrolytes.b


Correct blood volume depletion as fully as possible before administration.b


May be used in an emergency as an adjunct to fluid volume replacement or as a temporary supportive measure to maintain coronary and cerebral artery perfusion until volume replacement therapy can be completed, but norepinephrine must not be used as sole therapy in hypovolemic patients.b


Additional volume replacement also may be required during or after administration of norepinephrine, especially if hypotension recurs.b


Monitoring of central venous pressure or left ventricular filling pressure may be helpful in detecting and treating hypovolemia; in addition, monitoring of central venous or pulmonary arterial diastolic pressure is necessary to avoid overloading the cardiovascular system and precipitating CHF.b


Hypoxia, Hypercapnia, and Acidosis

Hypoxia, hypercapnia, and acidosis may reduce the effectiveness and/or increase the incidence of adverse effects of norepinephrine, and must be identified and corrected prior to or concurrently with administration of the drug.b


Extravasation

Because severe local adverse effects (e.g., tissue necrosis, sloughing at injection site) may occur as a result of local vasoconstriction, extravasation of norepinephrine must be avoided.100 b


The site of infusion should be checked frequently for free flow and the infused vein should be observed for blanching.b


Risk of tissue damage is apparently very slight if infused through a plastic catheter deep into an antecubital vein.b


Avoid injection into leg veins, especially in geriatric patients or those with occlusive vascular diseases, arteriosclerosis, diabetes mellitus, or Buerger’s disease.b


Impairment of circulation and sloughing of tissue may also occur without obvious extravasation.b


If blanching is observed in the infused vein or if therapy is to be prolonged, changing the injection site periodically may be advisable.b


Extravasation Treatment

If extravasation occurs, 10–15 mL of sodium chloride solution containing 5–10 mg of phentolamine mesylate should be infiltrated (using a syringe with a fine hypodermic needle) liberally throughout the affected area, which is identified by a cold, hard, and pallid appearance.100 b


Immediate and conspicuous local hyperemic changes occur if the area is infiltrated within 12 hours, but such treatment is ineffective when given >12 hours after extravasation; therefore, phentolamine should be administered as soon as possible after extravasation is noted.100 b


Addition of 5–10 mg of phentolamine to each L of infusion fluid containing norepinephrine may prevent sloughing of tissue, if extravasation occurs, without altering the pressor effects of norepinephrine; however, IV injection of phentolamine is not an effective antidote after extravasation has occurred.b


In severe hypotension after MI: Thrombosis in the infused vein and perivenous reactions and necrosis may be prevented by adding enough heparin to the norepinephrine infusion to supply 100–200 units of heparin per hour.b


Hypertensive or Hyperthyroid Patients

Risk of adverse reactions (e.g., photophobia, pallor, intense sweating, vomiting, retrosternal or pharyngeal pain, severe hypertension, cerebral hemorrhage, seizures, severe headache) in patients who are hypersensitive to the effects of norepinephrine (e.g., hyperthyroid patients).b Administer with caution to hypertensive or hyperthyroid patients.b


Peripheral or Mesenteric Vascular Thrombosis

Unless necessary as a life-saving procedure, do not use in patients with peripheral or mesenteric vascular thrombosis because ischemia may be increased and the area of infarction extended.b


Sensitivity Reactions


Sulfite Sensitivity

Formulations of norepinephrine bitartrate injection contain sulfites, which may cause allergic-type reactions (including anaphylaxis and life-threatening or less severe asthmatic episodes) in certain susceptible individuals.b


General Precautions


Prolonged Administration

Has caused decreased cardiac output, edema, hemorrhage, focal myocarditis, subpericardial hemorrhage, necrosis of the intestine, or hepatic and renal necrosis.b


Generally occurs in patients with severe shock and it is not clear if the drug or the shock state itself was the cause.b


Cardiovascular and Renal Effects

Can cause severe peripheral and visceral vasoconstriction, reduced blood flow to vital organs, decreased renal perfusion and therefore decreased urine output, tissue hypoxia, and metabolic acidosis; these effects are most likely to occur in hypovolemic patients.b


May cause plasma volume depletion which may result in perpetuation of the shock state or recurrence of hypotension when the drug is discontinued.b


Increases myocardial oxygen consumption and the work of the heart.b


Cardiac output may be decreased following prolonged use of the drug or administration of large doses because venous return to the heart may be diminished because of increased peripheral vascular resistance; decreased cardiac output may be especially harmful to elderly patients or those with initially poor cerebral or coronary circulation.b


Arrhythmias

May cause palpitation and bradycardia as well as potentially fatal cardiac arrhythmias, including ventricular tachycardia, bigeminal rhythm, nodal rhythm, AV dissociation, and fibrillation.b


Arrhythmias are especially likely to occur in patients with acute MI, hypoxia, or hypercapnia, or those receiving other drugs that may increase cardiac irritability such as cyclopropane or halogenated hydrocarbon general anesthetics.b (See Specific Drugs under Interactions.)


Specific Populations


Pregnancy

Category C.c


Lactation

Unknown whether norepinephrine is distributed into milk.b c Because of norepinephrine’s indications, use during breast-feeding is unlikely.c


Pediatric Use

Safety and efficacy not established.b


Geriatric Use

Has not been evaluated systematically in those ≥65 years of age, but the manufacturers currently do not make specific dosage recommendations for geriatric patients.b


If used in geriatric patients, the initial dosage usually should be at the low end of the dosage range and caution should be exercised since renal, hepatic, and cardiovascular dysfunction and concomitant disease or other drug therapy are more common in this age group than in younger patients.b


Norepinephrine infusions should not be administered into leg veins in geriatric patients.b (See Extravasation under Cautions.)


Common Adverse Effects


Headache, weakness, dizziness, tremor, pallor, respiratory difficulty or apnea, precordial pain.b


Interactions for Levophed Bitartrate


Specific Drugs







































Drug



Interaction



Comments



α-Adrenergic blocking agents (e.g., phentolamine)



Decreased pressor response in animals; however, interaction appears unlikely in humansb



β-Adrenergic blocking agents (e.g., propranolol)



Concomitant use may result in higher elevations of BP because of blockade of any β-mediated arteriolar dilationb


Cardiac stimulating effects of norepinephrine may be antagonizedb



Propranolol may be used to treat cardiac arrhythmias occurring during administration of norepinephrineb



Anesthetics, general (cyclopropane or halogenated hydrocarbons)



Concomitant use may result in arrhythmiasb



Concomitant use with cyclopropane or halogenated hydrocarbon general anesthetics generally contraindicatedb


If a pressor drug is required concomitantly with these general anesthetics, use one with minimal cardiac stimulating effects (i.e., methoxamine, phenylephrine)b



Antidepressants, tricyclic (e.g., imipramine)



May potentiate the pressor effects of norepinephrine, resulting in severe, prolonged hypertensionb



Use norepinephrine cautiously and in small dosesb



Antidepressants, MAO inhibitors



Risk of severe, prolonged hypertensionb


MAO is one of the enzymes responsible for norepinephrine metabolismb



Manufacturer states that norepinephrine should be administered with extreme caution to patients receiving an MAO inhibitor; however, some clinicians report that MAO inhibitors do not appear to potentiate effects of norepinephrine to a clinically important extentb



Antihistamines (especially diphenhydramine, tripelennamine, and dexchlorpheniramine)



May potentiate pressor effects of norepinephrine, resulting in severe, prolonged hypertensionb



Use norepinephrine cautiously and in small dosesb



Atropine



Atropine sulfate blocks the reflex bradycardia caused by norepinephrine and enhances the pressor response to norepinephrineb



Diuretics (e.g., furosemide)



May decrease arterial responsiveness to pressor drugsb



Ergot alkaloids, parenteral



May potentiate the pressor effects of norepinephrine, resulting in severe, prolonged hypertensionb



Use norepinephrine cautiously and in small dosesb



Guanethidine



May potentiate the pressor effects of norepinephrine, resulting in severe, prolonged hypertensionb



Use norepinephrine cautiously and in small dosesb



Methyldopa



May potentiate the pressor effects of norepinephrine, resulting in severe, prolonged hypertensionb



Use norepinephrine cautiously and in small dosesb


Levophed Bitartrate Pharmacokinetics


Absorption


Bioavailability


Oral: Destroyed in the GI tract.b


Sub-Q: Poorly absorbed.b


Onset


IV: Pressor response occurs rapidly.b


Duration


Short; pressor action stops within 1–2 minutes after the infusion is discontinued.b


Distribution


Extent


Localizes mainly in sympathetic nervous tissue.b


Crosses the placenta.b c Does not cross the blood-brain barrier.b


Not known if distributes into milk.b c


Elimination


Metabolism


Via the liver and other tissues by a combination of reactions involving the enzymes catechol-O-methyltransferase (COMT) and MAO.b


Pharmacologic actions are terminated mainly by uptake and metabolism in sympathetic nerve endings.b


Major metabolites are normetanephrine and 3-methoxy-4-hydroxy mandelic acid (vanillylmandelic acid, VMA), both of which are inactive.b


Elimination Route


Metabolites are excreted in urine mainly as the sulfate conjugates and, to a lesser extent, as the glucuronide conjugates; only small quantities of norepinephrine are excreted unchanged.b


Stability


Storage


Parenteral


Injection

Tight, light-resistant containers.b


Protect from light and air at 25°C (may be exposed to 15–30°C).b


Compatibility


For information on systemic interactions resulting from concomitant use, see Interactions.


Parenteral


IV infusion: Dilute norepinephrine with 5% dextrose injection with or without sodium chloride to protect against loss of potency caused by oxidation during IV infusion; do not use sodium chloride injection alone.b 100


Following dilution with 5% dextrose, IV infusions containing norepinephrine 2.5 or 4 mcg/mL have been reported to be stable for at least 24 hours at room temperature if the pH is approximately 5.6.b


Norepinephrine solutions containing 2.5 mcg/mL in 5% dextrose have been reported to lose 5% of their potency in 6 hours at pH 6.5 and in 4 hours at pH 7.5.b


Use caution if diluted with 5% dextrose injections with a pH of >5.5–6 or if the drug is mixed with alkaline additives such as sodium bicarbonate, barbiturates, or alkaline buffered antibiotics which will result in pH >6; these solutions should be used immediately after preparation.b


Should not be administered in the same IV line as alkaline solutions, which may inactivate the drug.100


Administer whole blood or plasma, if indicated during therapy with norepinephrine, separately or via a Y-tube.b


Solution CompatibilityHID








Compatible



Amino acids 4.25%, dextrose 25%



Dextrose 5% in sodium chloride 0.9%



Dextrose 5% in water



Ringer’s injection, lactated



Sodium chloride 0.9%


Drug Compatibility



































Admixture CompatibilityHID

Compatible



Amikacin sulfate



Calcium chloride



Calcium gluconate



Cimetidine HCl



Ciprofloxacin



Corticotropin



Dimenhydrinate



Dobutamine HCl



Heparin sodium



Hydrocortisone sodium succinate



Magnesium sulfate



Meropenem



Methylprednisolone sodium succinate



Multivitamins



Potassium chloride



Succinylcholine chloride



Verapamil HCl



Vitamin B complex with C



Incompatible



Aminophylline



Amobarbital sodium



Blood, whole



Chlorothiazide sodium



Chlorpheniramine maleate



Pentobarbital sodium



Phenobarbital sodium



Phenytoin sodium



Sodium bicarbonate



Streptomycin sulfate



Thiopental sodium



Variable



Ranitidine HCl












































Y-site CompatibilityHID

Compatible



Alcohol 10% in dextrose 5%



Amiodarone HCl



Argatroban



Bivalirudin



Dexmedetomidine HCl



Diltiazem HCl



Dobutamine HCl



Dopamine HCl



Epinephrine HCl



Esmolol HCl



Famotidine



Fenoldopam mesylate



Fentanyl citrate



Furosemide



Haloperidol lactate



Heparin sodium



Hetastarch in lactated electrolyte injection (Hextend)



Hydrocortisone sodium succinate



Hydromorphone HCl



Inamrinone lactate



Labetalol HCl



Lorazepam



Meropenem



Midazolam HCl



Milrinone lactate



Morphine sulfate



Nicardipine HCl



Nitroglycerin



Pantoprazole sodium



Potassium chloride



Propofol



Ranitidine HCl



Remifentanil HCl



Sodium nitroprusside



Vasopressin



Vecuronium bromide



Vitamin B complex with C



Incompatible



Drotrecogin alfa (activated)



Thiopental sodium


Actions



  • Acts predominantly by a direct effect on α-adrenergic receptors.b




  • Directly stimulates β-adrenergic receptors of the heart (β1-adrenergic receptors) but not those of the bronchi or peripheral blood vessels (β2-adrenergic receptors).b




  • Believed that α-adrenergic effects result from inhibition of the production of cyclic adenosine-3′,5′-monophosphate (AMP) by inhibition of the enzyme adenyl cyclase, whereas β-adrenergic effects result from stimulation of adenyl cyclase activity.b




  • Main effects of therapeutic doses are vasoconstriction and cardiac stimulation.b 100




  • Constricts both capacitance and resistance blood vessels by its effect on α-adrenergic receptors.b




  • Total peripheral resistance is increased, resulting in increased SBP and DBP.b Blood flow to vital organs, skin, and skeletal muscle is reduced.b




  • Local vasoconstriction caused by the drug may result in hemostasis and/or necrosis.b




  • May reduce circulating plasma volume (especially with prolonged use) as a result of loss of fluid into extracellular spaces caused by postcapillary vasoconstriction.b




  • Acts on β1-adrenergic receptors in the heart, producing a positive inotropic effect on the myocardium.b 100




  • Although norepinephrine has fewer CNS effects than does epinephrine, restlessness, headache, and tremor may occur.




  • Can increase glycogenolysis and inhibit insulin release in the pancreas, resulting in hyperglycemia.b




  • Increased oxygen consumption and elevation of body temperature may occur.b




  • As a result of its effect on α-adrenergic receptors, norepinephrine may cause contraction of the pregnant uterus and constriction of uterine blood vessels; however, the vasoconstrictor effects may be overcome by an increase in maternal blood pressure.b



Advice to Patients



  • Importance of informing clinicians of existing or contemplated concomitant therapy, including prescription and OTC drugs as well as any concomitant illnesses.




  • Importance of women informing clinicians if they are or plan to become pregnant or plan to breast-feed.




  • Importance of informing patients of other important precautionary information. (See Cautions.)



Preparations


Excipients in commercially available drug preparations may have clinically important effects in some individuals; consult specific product labeling for details.


* available from one or more manufacturer, distributor, and/or repackager by generic (nonproprietary) name


















Norepinephrine Bitartrate

Routes



Dosage Forms



Strengths



Brand Names



Manufacturer



Parenteral



For injection, concentrate, for IV infusion



1 mg (of norepinephrine) per mL*



Levophed Bitartrate (with sodium metabisulfite and sodium chloride)



Hospira



Norepinephrine Bitartrate Injection (with sodium metabisulfite and sodium chloride)



Bedford, PharmaForce, Sicor



Disclaimer

This report on medications is for your information only, and is not considered individual patient advice. Because of the changing nature of drug information, please consult your physician or pharmacist about specific clinical use.


The American Society of Health-System Pharmacists, Inc. and Drugs.com represent that the information provided hereunder was formulated with a reasonable standard of care, and in conformity with professional standards in the field. The American Society of Health-System Pharmacists, Inc. and Drugs.com make no representations or warranties, express or implied, including, but not limited to, any implied warranty of merchantability and/or fitness for a particular purpose, with respect to such information and specifically disclaims all such warranties. Users are advised that decisions regarding drug therapy are complex medical decisions requiring the independent, informed decision of an appropriate health care professional, and the information is provided for informational purposes only. The entire monograph for a drug should be reviewed for a thorough understanding of the drug's actions, uses and side effects. The American Society of Health-System Pharmacists, Inc. and Drugs.com do not endorse or recommend the use of any drug. The information is not a substitute for medical care.

AHFS Drug Information. © Copyright, 1959-2011, Selected Revisions September 08, 2011. American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland 20814.


† Use is not currently included in the labeling approved by the US Food and Drug Administration.




References



100. The American Heart Association. Guidelines 2005 for cardiopulmonary resuscitation and emergency cardiovascular care. Circulation. 2005; 112(Suppl I): IV1-211.



b. AHFS drug information 2007. McEvoy GK, ed. Norepinephrine. Bethesda, MD: American Society of Health-System Pharmacists; 2007:1350-3.



c. Briggs GG, Freeman RK, Yaffe SJ. Drug in pregnancy and lactation: a reference guide to fetal and neonatal risk. 6th ed. Philadelphia: Lippincott Williams & Wilkins; 2002:1014.



pdh. Schilling McCann JA, Publisher. Pharmacists drug handbook. 2nd ed. Philadelphia, PA: Lippincott Williams and Wilkins and American Society of Health-System Pharmacists; 2003.



HID. Trissel LA. Handbook on injectable drugs. 14th ed. Bethesda, MD: American Society of Health-System Pharmacists; 2007:1231-7.



More Levophed Bitartrate resources


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  • Levophed Bitartrate Concise Consumer Information (Cerner Multum)

  • Norepinephrine Prescribing Information (FDA)



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