Treating HIV infection. It is used along with other HIV medicines. Isentress is an HIV-1 integrase strand transfer inhibitor. It works by blocking HIV-1 integrase, an enzyme needed for the HIV virus to replicate.
Isentress (raltegravir) is used to treat the human immunodeficiency virus, also known as HIV. The drug is part of the HIV integrase strand transfer inhibitors drug class. Isentress helps to prevent the virus from spreading.