Here is another anti-viral drug on trial. Avigan (or it's generic name Favipiravir) is from Japan and it's been used for treatment of influenza in Japan and China already. It's effectiveness against COVID-19 is still largely unknown, but some pre-clinical and anecdotal clinical data exist. Mass. Hospitals To Launch Trial Of Japanese Drug Aimed At Fighting COVID-19 | CommonHealth According to FDA site, in the US, there are 10 drugs currently in active trials under Coronavirus Treatment Acceleration Program (CTAP), and 15 additional drugs in the planing phase.