In prescription terminology, what does 'PRN' stand for?

'PRN' stands for "as needed" in prescription terminology. This term is commonly used in medical settings to indicate that a medication should be taken only when necessary, rather than on a fixed schedule. For example, a doctor might prescribe pain relief medication to be taken PRN, meaning the patient should take it only when they feel pain rather than at regular intervals. This allows for more flexible management of symptoms and helps to avoid unnecessary medication use.

The other choices do not accurately reflect the meaning of PRN in the context of medication management. Understanding PRN is essential for both healthcare providers and patients to ensure appropriate use of medications and to facilitate effective treatment plans.