Tenvir EM Tablets are used to treat human immunodeficiency virus infections. They stop viruses from spreading throughout human cells. They cure your infection and prevent the virus from spreading to new viruses. The medications are used to treat chronic HBV infection. These pills should be taken with food or as a snack. Tenvir EM Tablets are safe to use. You should take these pills when your stomach is empty, which means taking them an hour before any food or waiting until two hours after.