What is TDF?
Drugs containing TDF, such as Truvada, are prescription medications manufactured by Gilead Sciences, Inc., a pharmaceutical company based in the United States. They are a complete regimen for individuals infected with HIV-1 and prevent the transmission of HIV. Some formulations of TDF, such as Truvada, are also used as daily PrEP pills marketed to HIV-negative individuals who are at risk of contracting HIV. TDF blocks an enzyme that causes HIV to proliferate, reducing the risk of infection.
In 2004, Health Canada first approved TDF in Canada and granted Gilead Sciences, Inc. permission to market Viread in Canada. Since then, Health Canada has approved a variety of TDF formulations, including Truvada, Atripla, Complera, and Stribild. TDF is approved as a means of reducing the spread of HIV.