The difference between Biktarvy (bictegravir, emtricitabine and tenofovir alafenamide) and Descovy (emtricitabine/tenofovir alafenamide) is that Biktarvy contains an extra active ingredient called bictegravir. Both Biktarvy and Descovy are used in the treatment of HIV-1 infection. Descovy is also used for HIV-1 Pre-Exposure Prophylaxis (PrEP).

Bictegravir is classified as an integrase strand transfer inhibitor and works by blocking the action of integrase, a human immunodeficiency virus (HIV) enzyme that promotes viral replication. Emtricitabine and tenofovir alafenamide are nucleoside reverse transcriptase inhibitors (NRTIs) that block the action of reverse transcriptase, an enzyme that promotes the formation of DNA from RNA.

Biktarvy Indication

Biktarvy is indicated as a complete regimen for the treatment of HIV-1 infection in adults and pediatric patients weighing at least 14 kg who have no antiretroviral treatment history or to replace the current antiretroviral regimen in those who are virologically suppressed (HIV-1 RNA less than 50 copies per mL) on a stable antiretroviral regimen with no history of treatment failure and no known substitutions associated with resistance to the individual components of Biktarvy.

Descovy Indication

Descovy is indicated:

• in combination with other antiretroviral agents for the treatment of HIV-1 infection in adults and pediatric patients weighing at least 35 kg.
• in combination with other antiretroviral agents other than protease inhibitors that require a CYP3A inhibitor for the treatment of HIV-1 infection in pediatric patients weighing at least 25 kg and less than 35 kg.

Descovy is also indicated in at-risk adults and adolescents weighing at least 35 kg for pre exposure prophylaxis (PrEP) to reduce the risk of HIV-1 infection from sexual acquisition, excluding individuals at risk from receptive vaginal sex (effectiveness in this population has not been evaluated).

Biktarvy and Descovy are both manufactured by Gilead Sciences Inc.