epa09563326 An undated handout photo released on 04 November 2021 and made available by Merck Sharp & Dohme Corp., shows experimental COVID-19 treatment pills called molnupiravir. Britain granted approval to molnupiravir from US pharmaceutical company Merck, the Medicines and Healthcare products Regulatory Agency (MHRA) announced 04 November 2021.  EPA/HANDOUT MANDATORY CREDIT HANDOUT EDITORIAL USE ONLY/NO SALES HANDOUT EDITORIAL USE ONLY/NO SALES