What is the maximum number of refills allowed on a C3-C5 prescription?

The maximum number of refills allowed on a Schedule III to V prescription is five. This regulation is set forth by the federal Controlled Substances Act, which governs the refilling of prescriptions for controlled substances.

For Schedule III and IV substances, they may be refilled up to five times within six months after the initial prescription date, provided the prescriber has authorized the refills. If the prescription is for a Schedule V substance, the same rules apply regarding the number of refills allowed.

This limitation is designed to ensure that controlled substances are monitored closely to prevent misuse and maintain patient safety. Therefore, the correct answer aligns directly with the established regulations for controlled substance refills in the United States.