Sofovir 400mg Tablet is an antiviral medication. It is used along with other medications for the treatment of chronic hepatitis C virus (HCV) infection. It works by lowering a load of hepatitis C virus in the body and removing the virus from the blood over a period of time. Sofovir 400mg Tablet should be taken in the dose and duration as advised by your doctor. Do not skip any doses and finish the full course of treatment even if you feel better. It should be taken with food, preferably at a fixed time. If you miss a dose, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular schedule. Do not double the dose. It has fewer side effects as compared to other similar medicines, like fatigue, headache, nausea, insomnia (difficulty sleeping) and anemia (low red blood cell count). Inform your doctor if these side effects persist for a longer duration. Please consult your doctor if you are pregnant, planning to conceive or breastfeeding.