What is a Form 20 Drug License? A Form 20 Drug License is issued for the retail sale of drugs listed under Schedule H (prescription drugs, excluding narcotics) and other non-scheduled drugs. It is required for pharmacies or retail drug stores selling medicines like antibiotics, antihistamines, and over-the-counter drugs directly to consumers. What is a Form 21 Drug License? ... https://www.psrcompliance.com/blog/what-is-form-20b-drug-license