Remdesivir is a prodrug that converts to GS-441524 in the body. https://pubs.acs.org/doi/10.1021/acsmedchemlett.0c00316 https://pubs.acs.org/doi/10.1021/acsmed

Remdesivir is a prodrug that converts to GS-441524 in the body. https://pubs.acs.org/doi/10.1021/acsmedchemlett.0c00316 https://pubs.acs.org/doi/10.1021/acsmedchemlett.0c00316 By most anecdotal accounts GS-441524 is better and possibly safer. And its readily available on the black market for treatment of cat FIP because apparently its much easier to make than Remdesivir. So yes, probably the only reason Remdesivir exists is patents