This Medicine is used alone or with other HIV medications to help control HIV infection. It helps to decrease the amount of HIV in your body so your immune system can work better. This lowers your chance of getting HIV complications (such as new infections, cancer) and improves your quality of life. Abacavir, lamivudine, and zidovudine all belong to a class of drugs known as nucleoside reverse transcriptase inhibitors (NRTIs).
Abacavir is a carbocyclic synthetic nucleoside analogue and an antiviral agent. Intracellularly, abacavir is converted by cellular enzymes to the active metabolite carbovir triphosphate, an analogue of deoxyguanosine-5'-triphosphate (dGTP). Carbovir triphosphate inhibits the activity of HIV-1 reverse transcriptase (RT) both by competing with the natural substrate dGTP and by its incorporation into viral DNA. Viral DNA growth is terminated because the incorporated nucleotide lacks a 3'-OH group, which is needed to form the 5′ to 3′ phosphodiester linkage essential for DNA chain elongation.
Lamivudine is a synthetic nucleoside analogue and is phosphorylated intracellularly to its active 5'-triphosphate metabolite, lamivudine triphosphate (L-TP). This nucleoside analogue is incorporated into viral DNA by HIV reverse transcriptase and HBV polymerase, resulting in DNA chain termination.
Zidovudine, a structural analog of thymidine, is a prodrug that must be phosphorylated to its active 5′-triphosphate metabolite, zidovudine triphosphate (ZDV-TP). It inhibits the activity of HIV-1 reverse transcriptase (RT) via DNA chain termination after incorporation of the nucleotide analogue. It competes with the natural substrate dGTP and incorporates itself into viral DNA. It is also a weak inhibitor of cellular DNA polymerase α and γ.
Use Trizivir (Abacavir-Lamivudine-Zidovudine) as directed by your doctor. Check the label on the medicine for exact dosing instructions.
Headache, nausea, diarrhea, dizziness, tiredness, or trouble sleeping may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.
Before taking Trizivir (Abacavir-Lamivudine-Zidovudine), tell your doctor or pharmacist if you are allergic to either of these drugs; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Store Trizivir (Abacavir-Lamivudine-Zidovudine) at room temperature between 59 and 86 degrees F (15 and 30 degrees C). Store in a tightly closed container. Store away from heat, moisture, and light. Keep Trizivir (Abacavir-Lamivudine-Zidovudine) out of the reach of children and away from pets.
Trizivir (Abacavir-Lamivudine-Zidovudine) is a prescription drug and should be used under proper medical guidance and advice. The information provided here is for general educational purposes only and does not constitute medical or pharmaceutical advice which should be sought from qualified medical and pharmaceutical advisers.