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abacavir 300 mg tablet 

Abacavir is used for:

Treating HIV infection with other medications.

Abacavir is a nucleoside analog reverse transcriptase inhibitor (NRTI). It works by slowing down the growth of HIV, the virus that causes AIDS.

Do NOT use abacavir if:

you are allergic to any ingredient in abacavir

you have moderate to severe liver problems

you take another medicine that contains abacavir

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

Before using abacavir:

Some medical conditions may interact with abacavir. 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 or thinking about 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 a history of heart problems (eg, heart attack), high blood pressure, liver problems (eg, hepatitis B), high cholesterol, or diabetes

if you smoke, drink alcohol, or are very overweight

if you have a history of autoimmune problems (eg, Graves disease, Guillain-Barré syndrome)

if you have been tested and know whether or not you have a gene type called HLA-B*5701

if you have ever taken another medicine that contains abacavir

Some MEDICINES MAY INTERACT with abacavir. Tell your health care provider if you are taking any other medicines, especially any of the following:

because its effectiveness may be decreased by abacavir

This may not be a complete list of all interactions that may occur. Ask your health care provider if abacavir 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 abacavir:

Use abacavir as directed by your doctor. Check the label on the medicine for exact dosing instructions.

Abacavir comes with an extra patient information sheet called a Medication Guide. Read it carefully. Read it again each time you get abacavir refilled.

Abacavir comes with a warning card that provides information about recognition of allergic reactions. Carry the warning card of allergy symptoms with you. Tell your health care provider immediately about any side effects you experience while taking abacavir.

Take abacavir by mouth with or without food.

Taking abacavir at the same time(s) each day will help you remember to take it.

Take abacavir on a regular schedule to get the most benefit from it.

Continue to take abacavir even if you feel well. Do not miss any doses.

If you miss a dose of abacavir, 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. If you are not sure what to do if you miss a dose, call your doctor.

Ask your health care provider any questions you may have about how to use abacavir.

Important safety information:

Abacavir may cause dizziness. This effect may be worse if you take it with alcohol or certain medicines. Use abacavir with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.

Tell your doctor or dentist that you take abacavir before you receive any medical or dental care, emergency care, or surgery.

Check with your doctor before you drink alcohol while you are using abacavir.

If you must stop taking abacavir for any reason other than a serious allergic reaction, do not start taking abacavir again without talking with your health care provider. If your health care provider decides that you may take abacavir again, you should do so only in a setting with other people in case you need immediate access to a doctor.

When your medicine supply is low, get more from your doctor or pharmacist as soon as you can. Do not stop taking abacavir, even for a short period of time. If you do, the virus may grow resistant to the medicine and become harder to treat.

Changes in body fat (eg, an increased amount of fat in the upper back, neck, breast, and trunk, and loss of fat from the legs, arms, and face) may occur in some patients taking abacavir. The cause and long-term effects of these changes are unknown. Discuss any concerns with your doctor.

Abacavir may improve immune system function. This may reveal hidden infections in some patients. Tell your doctor right away if you notice symptoms of infection (eg, fever, sore throat, weakness, cough, shortness of breath) after you start abacavir.

Abacavir does not stop the spread of HIV to others through blood or sexual contact. Do not have any kind of sex without protection (eg, latex or polyurethane condoms) if you have HIV infection. Do not share needles, injection supplies, or items like toothbrushes or razors. Talk with your health care provider about ways to prevent the spread of HIV to others.

Abacavir is not a cure for HIV infection. Patients may still get illnesses and infections associated with HIV. Remain under the care of your doctor.

Do NOT take more than the recommended dose, change the dose, or stop taking abacavir without checking with your doctor.

Lab tests, including liver function and monitoring for hypersensitivity reactions, may be performed while you use abacavir. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.

If your child is taking abacavir, the dose may need to be changed as your child's weight changes. Have your child's weight checked often. Talk with the doctor before changing your child's dose.


If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using abacavir while you are pregnant. It is not known if this medicine is found in breast milk. Mothers infected with HIV should not breast-feed. There is a risk of passing the HIV infection or abacavir to the baby.

Possible side effects of abacavir:

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:

Diarrhea; headache; lack of energy; loss of appetite; mild nausea; tiredness; trouble sleeping; unusual dreams; vomiting.

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); burning, numbness, or tingling; change in the amount of urine produced; chest, jaw, or arm pain; ear pain; eye pain, redness, or swelling; fainting; fever or chills; mental or mood changes (eg, depression); mouth sores; red, swollen, blistered, or peeling skin; severe or persistent dizziness; severe or persistent nausea, vomiting, or diarrhea; shortness of breath, cough, or sore throat; stomach pain; swollen lymph nodes; symptoms of lactic acidosis (eg, fast breathing; fast or irregular heartbeat; unusual muscle pain or tenderness; unusual cold feeling in the arms or legs; sluggishness; severe or unusual drowsiness, dizziness, or light-headedness); symptoms of liver problems (eg, yellowing of the skin or eyes, dark urine, pale stools, persistent loss of appetite); unusual achiness, sweating, or swelling; 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.

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