A drug manufacturer may market the same active ingredient as both prescription and nonprescription only if a meaningful difference exists.

• A. True
• B. False
• C. Not sure
• D. It depends

Answer: (A)

The key idea is that when the same active ingredient appears in both prescription and nonprescription products, there must be a meaningful difference between the two versions. That difference can be in strength or dosage, formulation, labeling, indications, or how the product is used, and it’s what justifies having separate Rx and OTC products for the same ingredient. This difference ensures safety for self-use with OTC products while preserving the need for clinician oversight for the prescription form. If there were no meaningful difference, regulators would not permit marketing the same ingredient in both markets, because it could create safety and labeling problems. So the statement is true: a meaningful difference is required for the same active ingredient to be marketed as both prescription and nonprescription.