What is the brand name of the drug abacavir?

Abacavir is an antiretroviral medication primarily used in the treatment of HIV. The brand name "Ziagen" is specifically associated with abacavir and is recognized in pharmacology as such. This relationship is important for healthcare professionals as they often need to identify both generic and brand names of medications for prescribing and patient education purposes.

The other choices represent different antiretroviral agents. For instance, Truvada is a combination of tenofovir and emtricitabine, Reyataz is the brand name for atazanavir, and Isentress refers to raltegravir. Each of these drugs serves different roles in HIV treatment regimens, but none of them are related to abacavir. Hence, knowing the specific brand name of abacavir as "Ziagen" aids in accurate communication and understanding of HIV therapies.