USES OF TENVIR TABLET Tenvir Tablet is used in the treatment of HIV infection and chronic hepatitis B virus (HBV) infection.HOWTO USE TENVIR TABLETTake this medicine in the dose and duration as advised by your doctor. Swallow it as a whole. Do not chew, crush or break it. Tenvir Tablet is to be taken with food.HOW TENVIR TABLET WORKS envir Tablet isan antiviral medication. It prevents the multiplication of virus in human cells. This stops the virus from producing new viruses and clears up your infection.