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Drug Notebook

Generic Name: abacavir

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Ziagen
An NRTI - It is used with other medicines to treat HIV
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FDA Alerts

  • Serious and sometimes fatal hypersensitivity reactions reported. These hypersensitivity reactions are a multiorgan syndrome usually characterized by a sign or symptom in ≥2 of the following groups: fever, rash, GI (including nausea, vomiting, diarrhea, abdominal pain), constitutional (including generalized malaise, fatigue, aching), and respiratory (including dyspnea, cough, pharyngitis). (See Hypersensitivity Reactions under Cautions.)
  • Individuals who carry the human leukocyte antigen (HLA)-B*5701 allele are at high risk for a hypersensitivity reaction. Prior to initiation of abacavir therapy, screening for the HLA-B*5701 allele is recommended. Screening also is recommended prior to reinitiation of abacavir therapy in patients who previously tolerated the drug whose HLA-B*5701 status is unknown. (See Hypersensitivity Reactions under Cautions.)
  • Discontinue abacavir as soon as a hypersensitivity reaction is suspected. Permanently discontinue if hypersensitivity cannot be ruled out regardless of the patient's HLA-B*5701 status, even when other diagnoses are possible.
  • Do not restart abacavir or any abacavir-containing preparation following a hypersensitivity reaction because more severe symptoms can recur within hours and have included potentially life-threatening hypotension and death. Severe or fatal hypersensitivity reactions can occur within hours after reintroduction of abacavir in patients with no identified history or unrecognized symptoms of abacavir hypersensitivity.
  • Lactic acidosis and severe hepatomegaly with steatosis (including some fatalities) reported rarely in patients receiving nucleoside reverse transcriptase inhibitors (NRTIs) alone or in conjunction with other antiretrovirals. (See Lactic Acidosis and Severe Hepatomegaly with Steatosis under Cautions.)
  • The fixed-combination preparation Epzicom® contains 2 NRTIs (abacavir and lamivudine) and the fixed-combination preparation Trizivir® contains 3 NRTIs (abacavir, lamivudine, zidovudine); these are intended only for patients whose regimen would otherwise include abacavir and the other components.
  • If using Epzicom® or Trizivir®, consider that severe, acute exacerbations of hepatitis B virus (HBV) infection have been reported when lamivudine was discontinued in patients coinfected with HBV and HIV. Closely monitor hepatic function for at least several months following discontinuance of Epzicom® or Trizivir® in patients coinfected with HBV and HIV. If appropriate, initiation of therapy for HBV infection may be warranted.
  • If using Trizivir®, consider that zidovudine has been associated with hematologic toxicity including neutropenia and severe anemia, particularly in those with advanced HIV infection, and that prolonged zidovudine use has been associated with symptomatic myopathy.

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abacavir
(a ba KA vir)
What is this medicine?What is the price of this medication and similar alternatives?What side effects may I notice from receiving this medicine?How should I use this medicine?What if I miss a dose?What may interact with this medicine?Who should NOT use this medication?What should I watch for while using this medicine?What should I tell my health care provider before I take this medicine?Can I stop taking the medication if I feel better?I am on so many medications; do I have to take them all?Where can I get more information?

What is this medicine?
ABACAVIR (a ba KA vir) is an antiretroviral medicine. It is used with other medicines to treat HIV. This medicine is not a cure for HIV. It will not stop the spread of HIV to others.

This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.

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What is the price of this medication and similar alternatives?

This pricing information is subject to change at the sole discretion of DS Pharmacy. This pricing information was updated 09/2009. For the most current and up-to-date pricing information, please visit www.drugstore.com. Actual costs to patients will vary depending on the use of specific retail or mail-order locations and health insurance copays.

Epzicom 600-300MG Tablets GLAXO SMITH KLINE30/$923.18 or 90/$2660.27
Trizivir 300-150-300MG Tablets GLAXO SMITH KLINE60/$1431.91 or 180/$4018.54
Ziagen 20MG/ML Solution GLAXO SMITH KLINE240/$132.55 or 720/$376.27
Ziagen 300MG Tablets GLAXO SMITH KLINE60/$545.02 or 120/$1025.15

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What side effects may I notice from receiving this medicine?
Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • breathing difficulties, cough
  • fever, chills, sore throat, infection
  • nausea, vomiting, diarrhea, stomach pain
  • redness, blistering, peeling or loosening of the skin, including inside the mouth
  • unexplained weight loss
  • unusually weak or tired

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • headache
  • loss of appetite
  • difficulty sleeping
  • weight gain around waist, back, or thinning of face, arms, legs

This list may not describe all possible side effects. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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How should I use this medicine?
Take this medicine by mouth with a glass of water. Follow the directions on the prescription label. You may take this medicine with or without food. Take your medicine at regular intervals. Do not take your medicine more often than directed. For your anti-HIV therapy to work as well as possible, take each dose exactly as prescribed. Do not skip doses or stop your medicine even if you feel better. Skipping doses may make the HIV virus resistant to this medicine and other medicines. Do not stop taking except on your doctor's advice.

A special MedGuide will be given to you by the pharmacist with each prescription and refill. Be sure to read this information carefully each time.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for selected conditions, precautions do apply.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.

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What if I miss a dose?
If you miss a dose, take it as soon as you can. Then take your next dose at the usual scheduled time. Do not take double or extra doses.

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What may interact with this medicine?
Do not take this medicine with any of the following medications:

  • alcohol or alcohol containing products

This medicine may also interact with the following medications:

  • any other medicine that contains abacavir
  • methadone

This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.

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Who should NOT use this medication?

  • Known hypersensitivity to abacavir or any ingredient in the formulation. Never restart abacavir after a hypersensitivity reaction regardless of the patient’s HLA-B*5701 status. Reinitiation of abacavir in patients with history of hypersensitivity to the drug has been associated with fatal rechallenge reactions.
  • Patients with moderate or severe hepatic impairment.

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What should I watch for while using this medicine?
Visit your doctor or health care professional for regular check ups. Discuss any new symptoms with your doctor. You will need to have important blood work done while on this medicine.

HIV is spread to others through sexual or blood contact. Talk to your doctor about how to stop the spread of HIV.

A small number of people may have a severe allergy to this medicine. Some symptoms are a skin rash, fever, nausea, vomiting, stomach pain, severe tiredness, aches, or generally feeling sick. A list of these symptoms is on the Warning Card given to you by your pharmacist. You should carry this Warning Card with you. If you have these symptoms while taking this medicine, stop the medicine and call your doctor right away.

If you stop this medicine because you ran out of medicine or because you may have had an allergic reaction, talk to your doctor. Do not restart this medicine without your doctor's advice. Severe hypersensitivity reactions can occur within hours and may include life-threatening hypotension and death.

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What should I tell my health care provider before I take this medicine?
They need to know if you have any of these conditions:

  • liver disease
  • an unusual or allergic reaction to abacavir, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding

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Can I stop taking the medication if I feel better?
If you have been diagnosed with a disease for which an antibiotic is needed, you must complete the prescribed course of treatment. Even if you start to feel better, do not skip any doses and remember to take the medication until it is all gone.

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I am on so many medications; do I have to take them all?
This is called polypharmacy—many different medications being used at the same time by one person. Sometimes, being on multiple medications is acceptable and appropriate but at other times it may be problematic. If you are receiving your medications from multiple physicians you need to ensure that they all know what medications you are taking. The best way to do this is to make a list of all the medications you are currently using, including all nutritional supplements, homeopathic remedies, vitamins and over-the-counter drugs (if possible, also include all the diseases you have been diagnosed with). Give a copy to every doctor who takes care of you so they have it on file, this way they can avoid duplicating medications and perhaps even try to consolidate some. After every doctor's visit remember to update the list accordingly. Also, as much as you possibly can, try to use the same pharmacy to fill all your prescriptions, this way any potential drug interactions can be caught and averted.

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Where can I get more information?
More Information

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