Isentress is indicated in combination with other anti-retrovirals for treatment-experienced adults with evidence of HIV-1 replication despite ongoing antiretroviral therapy
Raltegravir is an integrase inhibitor that inhibits the catalytic activity of integrase, an HIV-encoded enzyme required for viral replication.
Integrase is responsible for inserting the viral DNA into the DNA of the host cell. Inhibition of this enzyme prevents production of new infectious viral particles and further infection of other cells, and results in a reduction in the viral load.
Further information: MSD