PfizerAn experimental oral antiviral from Pfizer will be the focus of a Phase 1 study involving healthy adults.

Known as PF-07321332, the drug has shown promise in in vitro studies against SARS-CoV-2.

PF-07321332 belongs to a class of drugs known as protease inhibitors, which are commonly used to treat HIV/AIDS and hepatitis C. Protease inhibitors bind to a viral enzyme known as protease to stop viral replication.

Pfizer believes PF-07321332 to be the first orally-administered SARS-CoV-2-specific investigational protease inhibitor to be studied in a clinical trial.

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