Umifenovir hydrochloride is a potent, orally active broad-spectrum antiviral with activity against a number of enveloped and non-enveloped viruses. Umifenovir hydrochloride is used as an anti-influenza virus agent. Umifenovir hydrochloride could effectively inhibit the fusion of virus with host cells[1][2].Umifenovir hydrochloride is an efficient inhibitor of SARS-CoV-2 in vitro. Anti-inflammatory activity[3].
In Vitro
Umifenovir hydrochloride exhibits a wide range and potent antiviral activity against a number of viruses including influenza A, B and C viruses, respiratory syncytial virus, adenovirus, parainfluenza type 5 and rhinovirus type 14, avian coronavirus, infectious bronchitis virus and Marek disease virus, hepatitis B virus and hepatitis C virus[1].
In Vivo
Umifenovir (45-180 mg/kg; p.o.; daily for 5 days) suppresses the transcription of influenza viruses (IFV) -associated inflammatory cytokines[2].
[1]. Boriskin YS, et al. Arbidol: a broad-spectrum antiviral compound that blocks viral fusion. Curr Med Chem. 2008;15(10):997-1005. [2]. Liu Q, et al. Antiviral and anti-inflammatory activity of arbidol hydrochloride in influenza A (H1N1) virus infection. Acta Pharmacol Sin. 2013;34(8):1075-1083. [3]. Wang X, et al. The anti-influenza virus drug, arbidol is an efficient inhibitor of SARS-CoV-2 in vitro. Cell Discov. 2020;6:28. Published 2020 May 2.