Business Strides launches Favipiravir tablets, generic version of Japanese drug used against COVID-19 Updated : May 12, 2020 08:02 AM IST Favipiravir is a generic version of Avigan, which is produced by Japanese manufacturer Toyama Chemical. In a statement the company said that the antiviral drug was initially developed to treat flu in Japan, but studies in other countries have shown its effectiveness against coronavirus. Several drugs have been touted as effective against the novel coronavirus, but those claims have proven to be tenuous. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.