Tenvir 300mg is a prescription medication used to treat HIV-1 infection in adults. Each tablet contains 300 mg of Tenofovir Disoproxil Fumarate, an antiretroviral medication that works by slowing the growth of the virus in the body. This medication is typically taken once a day with or without food, as directed by a healthcare professional. It is important to continue taking Tenvir 300 mg regularly to experience its full benefits.