How Do Pfizer's and Merck's COVID Pills Work?

Both Pfizer (NYSE: PFE) and Merck (NYSE: MRK) have won U.S. approvals for their respective COVID-19 pills. In this Motley Fool Live video recorded on Jan. 5, Fool contributors Keith Speights and Brian Orelli respond to a viewer's question about how these pills work.

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Source Fool.com