What does the term PRN signify regarding medication dosing?

The term PRN is derived from the Latin phrase "pro re nata," which translates to "as needed." This indicates that a medication should be taken only when required, rather than on a fixed schedule. For example, a healthcare provider might prescribe pain relief medication to be taken PRN, allowing the patient to take it only when they are experiencing pain rather than adhering to a strict dosage timetable. Understanding this term is crucial for pharmacy technicians, as it aids in providing clear instructions to patients and ensuring effective medication management. The other options suggest a more rigid approach to medication administration, which does not align with the intent of PRN dosing.