Over-the-Counter (OTC)
A medication available without a prescription, considered safe for self-medication when used as directed. Very few peptide drugs are OTC — some topical antibiotics containing bacitracin or gramicidin may be available without prescription, but injectable peptide drugs universally require prescriptions.
Technical Context
OTC reclassification (Rx-to-OTC switch) requires demonstrating that: the condition is self-diagnosable, the drug has an acceptable safety profile for self-medication (wide therapeutic index, manageable side effect profile, low abuse potential), and consumers can use it correctly based on labelling alone. For peptide drugs, OTC status is rare because: most require injection (patient education needed), conditions treated typically require diagnosis and monitoring, and side effect profiles may require medical supervision. Some topical antimicrobial peptide products (bacitracin ointment, combination products containing gramicidin) are available OTC. The FDA's proposed OTC regulatory framework for certain drugs with additional conditions (ACs — such as pharmacist involvement) could theoretically enable more complex products to reach non-prescription status.