Which schedule's rules involve refills at physician's discretion?

• A. Schedule II medications
• B. Schedule III medications
• C. Schedule IV medications
• D. Schedule V medications

Answer: (D)

Refill rules track how easily a prescriber can authorize additional dispensing of a controlled substance. The higher the schedule on the abuse potential scale, the tighter the refill restrictions. Schedule II has no refills allowed; a new prescription is required for each dispensing. Lower schedules do allow refills, with the prescriber generally determining how many times within a set time frame the medication may be renewed. Among these, Schedule V is the one where refills are most clearly at the physician’s discretion, within the allowed period, reflecting its lower abuse potential. So, medications in Schedule V are the ones for which the physician typically decides how many refills to authorize.