Remdesivir Explained—What Makes This Drug Work Against Viruses?

Remdesivir Explained—What Makes This Drug Work Against Viruses?
A vial of the drug remdesivir is visually inspected at a Gilead manufacturing site in March 2020. Gilead Sciences via AP
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With the FDA approving Gilead’s Remdesivir as an emergency use treatment for the most acute cases of COVID-19, many people are wondering what type of a drug it is.

Remdesivir is a member of one of the oldest and most important classes of drugs – known as nucleoside analogue. Currently there are more than 30 of these types of drugs that have been approved for use in treating viruses, cancers, parasites, as well as bacterial and fungal infections, with many more currently in clinical and preclinical trials.