https://www.genuinedrugs123.com/152-Anti-HIV-Aids-Drugs-Generic-Raltegravir-Brand-Isentress.aspx - Raltegravir is a medication primarily used to treat HIV infection. It belongs to the class of drugs known as integrase inhibitors, which work by blocking the integration of the HIV virus into the DNA of human cells. Raltegravir helps to control the replication of the virus, slowing down the progression of the disease.