1. ISENTRESS 400MG (RALTEGRAVIR) is an antiviral medication used to treat HIV infection in adults. 2. It works by blocking the action of an enzyme needed for HIV to multiply and spread throughout the body. 3. ISENTRESS 400MG (RALTEGRAVIR) is available in tablet form and should be taken once daily with or without food. 4. It should be taken in combination with other antiretroviral medications to help reduce the amount of HIV in your body. 5. Buy ISENTRESS 400MG (RALTEGRAVIR) online from our website to treat HIV infection and help control the virus.