Favipiravir is an antiviral medicine used to treat mild to moderate SARS infections. It works by inhibiting the replication of the infection-causing viruses. Before using this medicine, it is advised to inform the doctor about your detailed medical and medication history. After taking this medicine, you might get diarrhea and certain psychiatric symptoms. If the side effect does not resolve on its own or gets worse, inform your doctor or visit a nearby clinic. You should avoid taking this medicine if you are pregnant, breastfeeding, suffering from any liver or kidney problems, or are allergic to it.