Kabavir-L is a tablet that contains two antiretroviral medications, Abacavir (600mg) and Lamivudine (300mg), used to treat HIV infection by preventing the virus from multiplying. It helps reduce the amount of virus in the body and increase CD4 cell count, which are white blood cells that fight infection. How Kabavir-L Works? Kabavir L contains two antiretroviral medicines that are classified as nucleoside reverse transcriptase inhibitors (NRTIs). Abacavir Sulphate (600mg):