What two components make up the drug Combivir?

Combivir is a combination medication specifically designed for the treatment of HIV and consists of two active ingredients: lamivudine and zidovudine. Lamivudine is a nucleoside reverse transcriptase inhibitor (NRTI) that works by interfering with the reproduction of the virus, while zidovudine, also an NRTI, was the first drug approved for HIV treatment and helps to reduce the viral load in the body.

The combination of these two drugs in Combivir allows for a more effective approach in the management of HIV by targeting the virus through different mechanisms, which can help in preventing drug resistance. This combination has been widely used in antiretroviral therapy due to its effectiveness and the history of its use in clinical practice.

The other combinations listed do not constitute Combivir. Abacavir and lamivudine form a different medication, Tenofovir and emtricitabine are components of other antiretroviral therapies, and Dolutegravir and lamivudine represent a separate class of medications that are used together but are not part of Combivir's formulation.