What is a Form 21 Drug License? A Form 21 Drug License is issued for the wholesale distribution of drugs listed under Schedule H (prescription drugs) and Schedule X (narcotic and psychotropic substances). These include medicines like antibiotics, antihistamines, and certain controlled drugs requiring a prescription. This license ensures compliance with regulations for handling and ... https://www.psrcompliance.com/blog/what-is-form-21b-drug-license