How do I know if a drug is a VFD, rather than an OTC drug? Veterinary Feed Directive 1.62K viewsOctober 10, 2022FDA 0 Sam Smith11.38K November 3, 2020 0 Comments Spread the loveSpread the love 1 Answer ActiveVotedNewestOldest 0 Blogolu28.38K Posted November 3, 2020 0 Comments Spread the loveRead the label. Over-the-counter (OTC) drugs do not have a VFD cautionary statement. Spread the love Login