ファビピラビルMeanings1nounfavipiravir; favilavirchemistryAntiviral drug name used in medical and pharmaceutical contexts. Also known by the brand name Avigan.ファビピラビルはインフルエンザ治ち療りょう薬やくとして開かい発はつされた。Favipiravir was developed as a treatment for influenza.