What are the most important things to know about Trizivir?
Trizivir can cause serious, life-threatening side effects. These include allergic reactions, a buildup ofin the blood ( ), problems, muscle disease ( ), and blood disorders such as a very low number of red blood cells (severe ) or lower than normal number of white blood cells ( ).
Trizivir contains abacavir, an HIV medicine. People who take abacavir-containing products, including Trizivir, may have a serious allergic reaction ( reaction) that can cause death. Your risk of this allergic reaction is much higher if you have a variation called HLA-B*5701. Your health care provider can determine if you have this gene variation with a blood test.
If you get a symptom from two or more of the following groups while taking Trizivir, contact your health care provider right away to find out if you should stop taking Trizivir.
- Group 1 Symptoms: Fever
- Group 2 Symptoms: Rash
- Group 3 Symptoms: Nausea, vomiting, diarrhea, abdominal (stomach area) pain
- Group 4 Symptoms: General ill feeling, extreme tiredness, or achiness
- Group 5 Symptoms: Shortness of breath, cough, sore throat
Your pharmacist will give you a Medication Guide and Warning Card with a list of these symptoms. Carry this Warning Card with you at all times.
If you stop taking Trizivir because of an allergic reaction, never take Trizivir or any other abacavir-containing medicine again. If you take Trizivir or any other abacavir-containing medicine again after you have had an allergic reaction, within hours you may get life-threatening symptoms that may include very low blood pressure or death.
If you stop Trizivir for any other reason, even for a few days, and you are not allergic to Trizivir, talk with your health care provider before taking it again. Taking Trizivir again can cause a serious allergic or life-threatening reaction, even if you never had an allergic reaction to Trizivir before. If your health care provider tells you that you can take Trizivir again, start taking it when you are around medical help or people who can call a health care provider if you need one.
Contact your health care provider right away if you have any of the following symptoms that could be signs of lactic acidosis:
- Weakness or tiredness
- Unusual muscle pain
- Shortness of breath or fast breathing
- Stomach pain with nausea and vomiting
- Cold or blue hands and feet
- Dizziness or lightheadedness
- Fast or abnormal heartbeat
Contact your health care provider right away if you have any of the following symptoms that could be signs of liver problems:
- Yellowing of your skin or the whites of your eyes ( )
- Dark-colored urine
- Light-colored bowel movements
- Loss of appetite for several days or longer
- Nausea or vomiting
- Pain, aching, or tenderness on the right side of your stomach/abdominal area
Trizivir may cause myopathy, especially when used for a long time. Contact your health care provider right away if you have muscle pain or weakness.
Trizivir can cause blood disorders such as very low number of red blood cells (severe anemia) or lower than normal number of white blood cells (neutropenia). Keep all appointments to have your blood count checked while you’re taking Trizivir.
Contact your health care provider right away if you have any of the following symptoms of severe anemia or neutropenia:
- Unusual bleeding or bruising
- Fever, chills, or other symptoms of
- Unusual tiredness or weakness
- Pale skin
If you have both HIV and(HBV) and take Trizivir, the hepatitis B virus can change (mutate) during your treatment with Trizivir and become harder to treat (resistant). Also, your HBV may get worse (flare up) if you stop taking Trizivir. Do not stop taking Trizivir without first talking to your health care provider.
Worsening of liver disease (sometimes resulting in death) has occurred in people who have both HIV and ribavirin. If you are taking Trizivir as well as interferon with or without ribavirin, tell your health care provider if you have any new symptoms.(HCV) and who were taking HIV medicines and with or without
While taking Trizivir, it is important to keep all of your appointments with your health care provider.
What is Trizivir?
Trizivir is a prescription medicine approved by the U.S.(FDA) for the treatment of HIV infection in adults and children. Trizivir can be used alone as a complete HIV or with other HIV medicines.
Although Trizivir is FDA-approved, it is no longer commonly used or recommended as an HIV treatment. The Guidelines for the Use of Antiretroviral Agents in Adults and Adolescents with HIV no longer contain detailed or updated information on the use of Trizivir. Please refer to the FDA drug label (tablet [film coated]) for additional information regarding the use of Trizivir in people with HIV. For more information on the use of Trizivir in children with HIV, please refer to the Guidelines for the Use of Antiretroviral Agents in Pediatric HIV Infection.
HIV medicines cannot cure HIV/AIDS, but taking HIV medicines every day helps people with HIV live longer, healthier lives. HIV medicines also reduce the risk of HIV. If you are taking HIV medicines, do not cut down on, skip, or stop taking them unless your health care provider tells you to.
What should I tell my health care provider before taking Trizivir?
Before taking Trizivir, tell your health care provider:
- If you are allergic to any of the HIV medicines in Trizivir (abacavir, lamivudine, or zidovudine) or any other medicines.
- If you have been tested and know whether you have a particular variation called HLA-B*5701.
- If you have or have ever had problems, including (HBV) or (HCV).
- If you have problems.
- If you have low blood cell counts, which could be a sign of problems.
- If you have heart problems, smoke, or have diseases that increase your risk of heart disease, such as , high , or .
- If you have any other medical conditions.
- If you are pregnant or plan to become pregnant. Talk to your health care provider about the risks and benefits of taking Trizivir during pregnancy. For more information on the use of Trizivir during pregnancy, please refer to the Recommendations for the Use of Antiretroviral Drugs During Pregnancy and Interventions to Reduce Perinatal HIV Transmission in the United States.
- If you are breast/chestfeeding or plan to breast/chestfeed. For people with HIV in the United States, the Guideline recommends speaking with your health care provider to discuss options for feeding your baby. People with suppressed viral load have a less than 1% chance of transmitting HIV to their baby via their own milk.
- If you are using HIV and Birth Control infographic. -based birth control (such as pills, , or vaginal rings). For more information about using birth control and HIV medicines at the same time, view the HIVinfo
- About other prescription and nonprescription medicines, vitamins, nutritional supplements, and herbal products you are taking or plan to take. Trizivir may affect the way other medicines or products work, and other medicines or products may affect how Trizivir works. Taking Trizivir together with certain medicines or products may cause serious, life-threatening side effects.
How should I take Trizivir?
Trizivir comes in tablet form. Each tablet contains:
Take Trizivir according to your health care provider’s instructions. Do not miss aof Trizivir, and do not change your dose or stop taking Trizivir without first talking with your health care provider.
Take Trizivir by mouth, with or without food.
If you have taken too much Trizivir, contact your health care provider or local poison control center (1-800-222-1222) right away, or go to the nearest hospital emergency room.
For more information on how to take Trizivir, see the FDA drug label.
What should I do if I forget a dose?
If you miss aof Trizivir, take the missed dose as soon as you remember it. But if it is almost time for your next dose, skip the missed dose and just take your next dose at the regular time. Do not take two doses at the same time to make up for a missed dose.
What side effects can Trizivir cause?
Trizivir may cause side effects. Some side effects of Trizivir can be serious as noted above. Many side effects from HIV medicines, such as nausea or occasional dizziness, are manageable. See the HIVinfo fact sheet on HIV Medicines and Side Effects for more information.
Other possible side effects of Trizivir include:
- Changes in your (called or IRIS). IRIS is a condition that sometimes occurs when the immune system begins to recover after treatment with an HIV medicine. As the immune system gets stronger, it may have an increased response to a previously hidden infection.
- Loss of body fat ( ).
- Increased risk of heart attack ( ).
Tell your health care provider if you have any side effect that bothers you or that does not go away.
These are not all the possible side effects of Trizivir. To learn more about possible side effects of Trizivir, read the drug label or or talk to your health care provider or pharmacist.
You can report side effects to FDA at 1-800-FDA-1088 (1-800-332-1088) or online.
How should Trizivir be stored?
- Store Trizivir at 77°F (25°C).
- Keep Trizivir in the container that it came in and keep the container tightly closed.
- Do not use Trizivir if the original seal over the container opening is broken or missing.
- Throw away Trizivir that is no longer needed or expired (out of date). Follow FDA guidelines on how to safely dispose of unused medicine.
- Keep Trizivir and all medicines out of reach of children.
Where can I find more information about Trizivir?
- For more information on the use of Trizivir in people with HIV, please refer to the Guidelines for the Use of Antiretroviral Agents in Adults and Adolescents with HIV and the Guidelines for the Use of Antiretroviral Agents in Pediatric HIV Infection.
- This Patient Version drug summary is based on the following FDA label(s): Tablet (film coated). The Medication Guide includes information for people taking Trizivir.
- The American Hospital Formulary Service (AHFS) Patient Medication Information for abacavir, lamivudine, and zidovudine available from MedlinePlus.
- Trizivir-related research studies, from . (The ClinicalTrials.gov search can be modified so that you can get results that better match your interests. To learn more about the ClinicalTrials.gov search features, please see How to Search.)
- A list of FDA-approved HIV medicines, from HIVinfo.
Main number: 877-844-8872
Patient assistance (ViiV Connect): 844-588-3288
Last Reviewed: March 8, 2023