600MG Efavirenz Emtricitabine And Tenofovir Disoproxil Fumarate Tablets IP are the ones that contains 3 different medications: efavirenz, emtricitabine, and tenofovir. They are used alone or with other HIV medications to help control HIV infection. 600MG Efavirenz Emtricitabine And Tenofovir Disoproxil Fumarate Tablets IP helps to decrease the amount of HIV in your body so your immune system can work better.