Abacavir-lamivudine-zidovudine is an antiviral medication. It is in a group of human immunodeficiency virus (HIV) medicines called reverse transcriptase inhibitors. This medication helps keep the HIV virus from reproducing in the body.

This medication is used to treat HIV, which causes the acquired immunodeficiency syndrome (AIDS). This medication is not a cure for HIV or AIDS.

This medication may also be used for purposes other than those listed in this medication guide. This medication should not be given to people who weigh less than 90 pounds.

Take this medication exactly as it was prescribed for you. Do not take the medication in larger amounts, or take it for longer than recommended by your doctor. Follow the instructions on your prescription label.

You may take this medication with or without food.

Measure the liquid form of this medicine with a special dose-measuring spoon or cup, not a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist where you can get one.

HIV/AIDS is usually treated with a combination of different drugs. To best treat your condition, use all of your medications as directed by your doctor. Be sure to read the medication guide or patient instructions provided with each of your medications. Do not change your doses or medication schedule without advice from your doctor. Every person with HIV or AIDS should remain under the care of a doctor.

This medicine comes with a Medication Guide and a Warning Card that lists the symptoms of an allergic reaction. Read this information carefully and carry the Warning Card with you at all times so you will know what symptoms to watch for.

Store this medication at room temperature away from moisture and heat. You may keep the oral solution (liquid) in the refrigerator but do not let it freeze.

Before taking this medication, tell your doctor if you are using any of the following drugs:

• methadone (Methadose, Dolophine);

• ribavirin (Copegus, Rebetron, Virazole);

• interferon (Rebetron, Roferon, Intron, Alferon, Infergen, Avonex, Rebif, Betaseron, Actimune);

• sulfa drugs such as Bactrim or Septra;

• doxorubicin (Adriamycin);

• ganciclovir (Cytovene);

• emtricitabine (Emtriva, Truvada);

• abacavir (Ziagen);

• abacavir and lamivudine (Epzicom);

• lamivudine and zidovudine (Combivir); or

• these other HIV medicines - lamivudine (3TC, Epivir), stavudine (Zerit), or zidovudine (Retrovir).

If you are using any of these drugs, you may not be able to take Trizivir, or you may need dosage adjustments or special monitoring during treatment.

There may be other drugs not listed that can affect Trizivir. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.

Avoid having unprotected sex or sharing needles, razors, or toothbrushes. Taking this medication will not keep you from passing HIV to other people. Talk with your doctor about safe methods of preventing HIV transmission during sex, such as using a condom and spermicide. Sharing drug or medicine needles is never safe, even for a healthy person.

Seek emergency medical attention if you think you have used too much of this medicine. Symptoms of a Trizivir overdose may include nausea, vomiting, headache, dizziness, drowsiness, lethargy, and confusion.

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at the next regularly scheduled time. Do not take extra medicine to make up the missed dose.

Do not allow this medicine to run out completely before you get your prescription refilled. It is important that you not stop taking the medicine once you have started. If you miss several doses, you may have a dangerous or even fatal allergic reaction once you start taking the medicine again. If you stop taking Trizivir for any reason, talk to your doctor before you start taking the medication again.

Stop using this medication and call your doctor at once if you have any of these signs of an allergic reaction: fever; rash; nausea, vomiting, diarrhea, stomach pain; general tiredness, body aches; shortness of breath, cough, sore throat.

Once you have had an allergic reaction to this medication, you must never use it again.

Read the Warning Card that comes with this medication, and carry it with you at all times so you will know the symptoms of allergic reaction to watch for.

Do not allow this medicine to run out completely before you get your prescription refilled. If you miss several doses, you could have a dangerous or even fatal allergic reaction when you start taking the medicine again. If you stop taking this medication for any reason, talk to your doctor before you start taking the medication again.

Do not take this medicine if you have ever had an allergic reaction to abacavir. Tell your doctor if you have had an allergic reaction to any medicine that contains abacavir, such as Combivir, Epzicom, or Ziagen. Once you have had an allergic reaction to abacavir, you must never use it again.

This medication may cause lactic acidosis (the build up of lactic acid in the body). Lactic acidosis symptoms can start slowly and gradually get worse. Symptoms include unusual muscle pain and weakness, trouble breathing, fast or uneven heart rate, nausea, vomiting, stomach pain, and numbness or cold feeling in your arms or legs. Contact your doctor at once if you have any of these symptoms, even if they are only mild. Early signs of lactic acidosis generally get worse over time and this condition can be fatal.

Your name may need to be listed on an abacavir patient registry when you start using this medication.

Before taking this medication, tell your doctor if you have liver or kidney disease. You may not be able to use this medication or you may need a dosage adjustment or special tests during treatment.

FDA pregnancy category C. This medication may be harmful to an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant during treatment. HIV can be passed to the baby if the mother is not properly treated during pregnancy. Take all of your HIV medicines as directed to control your infection while you are pregnant.

You should not breast-feed while you are using this medication. Women with HIV or AIDS should not breast-feed at all. Even if your baby is born without HIV, you may still pass the virus to the baby in your breast milk.

Your pharmacist has more information about abacavir-lamivudine-zidovudine (Trizivir) written for health professionals that you may read.

Abacavir-lamivudine-zidovudine (Trizivir) is available with a prescription under the brand name Trizivir. Other brand or generic formulations may also be available. Ask your pharmacist any questions you have about this medication, especially if it is new to you.

• Trizivir-300 mg abacavir/150 mg lamivudine/300 mg zidovudine–blue-green, film-coated, capsule-shaped tablets