For a patient being prescribed ibuprofen after a dental procedure, how would you interpret "1 PO Q6H PRN pain"?

Breaking down the abbreviations, PO = by mouth, Q6H = every 6 hours, and PRN = as needed. Although "Take" and "for" are not written on the prescription, they should be added to ensure that the instructions remain clear to the patient long after they have left the pharmacy. Of note, in the case of a PRN medication, the indication for the medication should always be clearly marked on the label.