Which type of drug requires a prescription from a licensed healthcare provider?

The category of drugs that requires a prescription from a licensed healthcare provider is prescription drugs. These medications are regulated and can only be dispensed to individuals who have been evaluated by a healthcare professional, ensuring that they are used safely and effectively for specific medical conditions. The requirement for a prescription signifies that these drugs have the potential for misuse, side effects, or interactions with other medications, and thus require oversight by a medical professional.

In contrast, nonprescription drugs, often referred to as over-the-counter medications, can be purchased without a prescription, as they are considered safe for general public use when taken according to the manufacturer's instructions. First aid drugs typically refer to basic supplies used for minor injuries and do not require prescriptions. Emergency drugs, while they may be critical in urgent situations, can also be delivered in specific contexts without a prescription, depending on the drug and situation.