IMPORTANT WARNING:
Abacavir, lamivudine, and zidovudine may cause a serious or life-threatening allergic reaction. Call your doctor immediately if you develop one symptom from two or more of the following groups:
- Group 1: fever
- Group 2: rash
- Group 3: nausea, vomiting, diarrhea, or stomach area pain
- Group 4: generally ill feeling, extreme tiredness, or achiness
- Group 5: shortness of breath, cough, or sore throat
Your pharmacist will give you a Warning Card each time you receive your medication. The Warning Card lists the symptoms mentioned above. Be sure to carry this Warning Card with you at all times.
Some people may be more likely to have an allergic reaction to abacavir, based on their genetic make-up. Your doctor may order a genetic lab test prior to starting abacavir, lamivudine, and zidovudine. Tell your doctor and pharmacist if you are allergic to abacavir or any other medications that contain abacavir. If your doctor tells you to stop taking abacavir, lamivudine, and zidovudine because you had an allergic reaction, never take abacavir, lamivudine, and zidovudine or a medication containing abacavir again. If you stop taking abacavir, lamivudine, and zidovudine for any other reason, including missing several doses in a row or running out of medication, do not start taking it again without first talking to your doctor. You will need to be around people who can provide or call for emergency medical care, if needed, when you restart this medication.
Abacavir, lamivudine, and zidovudine may stop your body from making enough blood cells. Tell your doctor if you have or have ever had a low number of any type of blood cells or any blood disorders. If you experience any of the following symptoms, call your doctor immediately: unusual bleeding or bruising; shortness of breath; pale skin; fever, sore throat, chills, and other signs of infection; or unusual tiredness or weakness.
Abacavir, lamivudine, and zidovudine may cause muscle problems. Tell your doctor if you have or have ever had any muscular disease or swelling of the muscles. If you experience muscle pain or weakness, call your doctor immediately.
Abacavir, lamivudine, and zidovudine may cause life-threatening damage to the liver. Tell your doctor if you have or have ever had liver disease. If you have liver disease, your doctor will probably tell you not to take abacavir, lamivudine, and zidovudine. If you experience any of the following symptoms, call your doctor immediately or get emergency medical treatment: nausea, vomiting, pain in the upper right part of your stomach, loss of appetite, flu-like symptoms, extreme tiredness, unusual bleeding or bruising, weakness, dizziness, lightheadedness, fast or irregular heartbeat, trouble breathing, dark yellow or brown urine, light-colored bowel movements, yellowing of the skin or eyes, feeling cold, especially in the arms or legs, or muscle pain that is different from any muscle pain you usually experience.
Abacavir, lamivudine, and zidovudine should not be used to treat hepatitis B virus infection (HBV; an ongoing liver infection). Tell your doctor if you have or think you may have HBV. Your doctor may test you to see if you have HBV before you begin your treatment with abacavir, lamivudine, and zidovudine. If you have HBV and you take abacavir, lamivudine, and zidovudine, your condition may suddenly worsen when you stop taking this medication. Your doctor will examine you and order lab tests regularly for several months after you stop taking this medication.
Keep all appointments with your doctor and the laboratory. Your doctor will order certain tests to check your body's response to abacavir, lamivudine, and zidovudine.
Your doctor or pharmacist will give you the manufacturer's patient information sheet (Medication Guide) when you begin treatment with abacavir, lamivudine, and zidovudine and each time you refill your prescription. Read the information carefully and ask your doctor or pharmacist if you have any questions. You can also visit the Food and Drug Administration (FDA) website (https://www.fda.gov/Drugs/DrugSafety/ucm085729.htm) to obtain the Medication Guide.
Talk to your doctor about the risks of taking abacavir, lamivudine, and zidovudine.