What requirement does the Durham-Humphrey Amendment impose on medication manufacturers?

The Durham-Humphrey Amendment, enacted in 1951, established a clear distinction between prescription and over-the-counter (OTC) medications. One of its key provisions was the requirement for certain drugs to carry a label that states, "Caution: Federal law prohibits dispensing without a prescription." This labeling serves to inform both pharmacists and patients that the medication is not to be sold without a prescription from a licensed healthcare provider.

By imposing this requirement, the amendment helps ensure patient safety by ensuring that potentially dangerous or habit-forming medications are used under the supervision of a healthcare professional. It highlights the need for prescriptions for certain drugs, thereby promoting responsible use and adherence to medical guidelines.

The other options do not directly relate to the requirements set forth by the Durham-Humphrey Amendment; thus, they do not align with the amendment’s intentions regarding the regulation of medications.