Clinical Trials of Repurposed Antivirals for SARS-CoV-2

and therapeutic results with other human coronavirus diseases, such as severe acute respiratory syndrome (SARS) and Middle East respiratory syndrome (MERS). These repurposed drugs have mainly included remdesivir, favipiravir, lopinavir-ritonavir, ribavirin, interferons, and hydroxychloroquine. Unfortunately, the first open-label, randomized, controlled trials are showing poor efficacy of these repurposed drugs. These results highlight the necessity of identifying and characterizing specific and potent SARS-CoV-2 antivirals.