U.K. Authorizes Merck’s Antiviral Pill for Covid-19 November 4, 2021 Auto Bot Coronavirus (2019-nCoV), Great Britain, Merck & Company Inc, Molnupiravir (Drug), Ridgeback Biotherapeutics 0 The authorization of Merck’s easy-to-use Covid treatment, molnupiravir, is a step toward taming the pandemic.