Effects of the hepititus drug called heptovir (lamivudine)?

Usually well-tolerated. Heptovir is the generic name for lamivudine, a hepatitis B drug. For the most part, it is usually well-tolerated. Anyone could have side effects from the medications, however. Contact your doctor immediately if you have severe muscle pain or cramping, a sign of an allergic reaction, or severe abdominal pain. Good luck.