Pfizer’s candidate, which is called PF-07321332, belongs to a class of drugs known as protease inhibitors.
The pill would work by inhibiting an enzyme that the coronavirus uses to make copies of itself inside human cells.
Protease inhibitors have been effective at treating other viral pathogens such as HIV and hepatitis C virus, both on their own and in combination with other antivirals, the company said.link
This is very good news. ABN