Reyataz (atazanavir) belongs to a class of anti-HIV drugs known as protease inhibitors, which are known to reduce the amount of HIV in the blood and to increase the number of CD4 cells in the body.

Selzentry (maraviroc) is a CCR5-blocking entry inhibitor, which means that it binds to a protein on the membrane of CD4 cells (white blood cells) called CCR5. Once it does this, HIV cannot successfully attach itself to the surface of CD4 cells, and is prevented from infecting healthy cells. Selzentry is not recommended for people under 16 years of age. Some patients taking Selzentry have experienced serious side effects, including liver problems.

Stavudine (Zerit) belongs to class of anti-HIV drugs known as nucleoside reverse transcriptase inhibitors (NRTIs). NRTIs act as fake versions of the building blocks HIV needs, preventing HIV from making copies of itself. Stavudine is not a recommended NRTI for HIV positive adults beginning HIV therapy for the first time.

Sustiva (efavirenz) belongs to a class of anti-HIV drugs known as non-nucleoside reverse transcriptase inhibitors, which bind to and block the action of reverse transcriptase, an essential protein that HIV needs in order to replicate. Sustiva is also an ingredient in Atripla (efavirenz/emtricitabine/tenofovir). Sustiva (in the form of Atripla) is the preferred NNRTI for HIV-positive adults starting HIV drug therapy for the first time.  Sustiva is not recommended during the first 3 months of pregnancy.

Trizivir (zidovudine/lamivudine/abacavir) is a combination pill containing three anti-HIV drugs in the class known as nucleoside reverse transcriptase inhibitors (NRTIs). NRTIs act as fake versions of the building blocks HIV needs, preventing HIV from making copies of itself. Trizivir is taken twice daily.

Truvada (emtricitabine/tenofovir) is a combination pill containing two anti-HIV drugs in the class known as nucleoside reverse transcriptase inhibitors (NRTIs). NRTIs act as fake versions of the building blocks HIV needs, preventing HIV from making copies of itself. Truvada is taken once a day.

Viracept (nelfinavir) belongs to a class of anti-HIV drugs known as protease inhibitors, which are known to reduce the amount of HIV in the blood and to increase the number of CD4 cells in the body.

Viramune (nevirapine) belongs to a class of anti-HIV drugs known as non-nucleoside reverse transcriptase inhibitors, which bind to and block the action of reverse transcriptase, an essential protein that HIV needs in order to replicate. Some people taking Viramune have experienced serious side effects, such as severe liver disease or skin reactions.

Viread (tenofovir) belongs to class of anti-HIV drugs known as nucleoside reverse transcriptase inhibitors (NRTIs). NRTIs act as fake versions of the building blocks HIV needs, preventing HIV from making copies of itself.

Ziagen (abacavir) belongs to class of anti-HIV drugs known as nucleoside reverse transcriptase inhibitors (NRTIs). NRTIs act as fake versions of the building blocks HIV needs, preventing HIV from making copies of itself. Ziagen is taken in tablet form, and can be prescribed in either a once daily or twice daily dosage.