Pfizer today announced its formal request that the Food and Drug Administration authorize the emergency use of its PAXLOVID (PF-07321332; ritonavir) oral antiviral for combating SARS-CoV-2. Pfizer says data from its phase 2/3 clinical trial shows that the drug, which works as a 3CL protease inhibitor, reduced the risk of COVID-19-related hospitalization or death by 89%.

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