What does the acronym PRN indicate in a prescription context?

In a prescription context, the acronym PRN stands for "as needed." This term is commonly used by healthcare providers to indicate that a medication should be taken only when necessary, rather than on a fixed schedule. For example, a doctor might prescribe a pain reliever PRN, meaning the patient should take it when they experience pain, rather than at regular intervals. This approach is useful for managing symptoms that can vary in intensity, allowing for more personalized and effective treatment.

Other options represent specific dosing schedules but do not capture the flexible nature of PRN. "Every month" refers to a regular interval, while "once daily" specifies a daily regimen. "At bedtime" indicates a specific time for administration, demonstrating that PRN is distinct as it allows for variability based on the patient's needs.