What defines prescription medications?

Prescription medications are specifically defined by the requirement that they must be ordered by a licensed healthcare professional, such as a doctor, dentist, or nurse practitioner. This regulation is in place to ensure that the medication is appropriate for the patient's specific medical condition and that it is used safely and effectively. The involvement of a healthcare professional in prescribing these medications helps prevent misuse and ensures that the patient understands the medication's intended use, dosage, and potential side effects.

Other options do not accurately represent the defining characteristics of prescription medications. While some prescription medications can be expensive and may require monitoring, not all fall into this category, and expense is not a defining feature. Similarly, prescription medications are not available for purchase in stores without a doctor's order, as this is a key distinction between prescription and over-the-counter medications. Lastly, while many prescription medications may have serious side effects, this is not a defining characteristic, since over-the-counter medications can also have side effects.