Influenza virus
| Amantadine | Influenza | M2 ion channel blocker; prevents acidification of viral interior, blocking uncoating | FDA approved | FDAJapan | M2 proton channel (Matrix protein 2) | AntiviralDbpmda.go.jp |
| Rimantadine | Influenza | — | FDA approved | FDARussia | Matrix protein 2 | AntiviralDb |
| Baloxavir marboxil | Influenza | — | FDA approved | FDAJapan | RNA polymerase | |
| Favipiravir | Influenza | — | FDA approved | FDAJapanChinaRussia | RNA polymerase | |
| Zanamivir | Influenza | — | FDA approved | FDAJapan | Neuraminidase | AntiviralDbpmda.go.jp |
| Oseltamivir | Influenza | — | FDA approved | FDAJapanChina | Neuraminidase | |
| Laninamivir octanoate | Influenza | — | Approved (other) | Japan | Neuraminidase | AntiviralDb |
| Arbidol | Influenza | — | Approved (other) | Russia | Haemagglutinin | AntiviralDb |