Viraday (Tenofovir Disoproxil Fumarate/Emtricitabine/Efavirenz) contains three different anti-retroviral drugs that are effective in treatment of retroviruses (RNA viruses) such as Human Immunodeficiency Virus (HIV). Replication of the HIV virus is caused by the action of viral-specific enzyme reverse transcriptase. These drugs inhibit the action of these enzymes.
