What is the composition of the drug Trizivir?

The drug Trizivir is composed of abacavir, lamivudine, and zidovudine, making this the correct choice. Trizivir is an antiretroviral medication used in the treatment of HIV. Each of these components plays a specific role in combating the virus:

• Abacavir is a nucleotide reverse transcriptase inhibitor (NRTI) that works by blocking the reverse transcriptase enzyme necessary for HIV to replicate.

• Lamivudine is also an NRTI, functioning similarly by inhibiting the reverse transcriptase and preventing viral replication.

• Zidovudine, the third component, is another NRTI that helps reduce the viral load in the body by acting on the same enzyme.

The combination of these three medications in Trizivir enhances its effectiveness in treating HIV by using multiple mechanisms to inhibit viral replication, thereby contributing to a more robust antiviral treatment regimen.

Other combinations listed do not constitute Trizivir; instead, they represent different classes of HIV medications used individually or in other combinations to treat the virus.