A prescription for a controlled substance is valid for up to how many months from the date of issue?

The correct duration for which a prescription for a controlled substance is valid is 6 months from the date of issue. This timeframe is established by both federal and New Hampshire state regulations. A prescription must be filled within this period for it to be considered valid. Once the 6-month period has elapsed, the prescription is no longer acceptable for dispensing, and the prescriber would need to issue a new prescription.

The other options exceed the valid duration for controlled substance prescriptions as outlined by the regulations. Understanding these timelines is crucial for practicing pharmacists, as it ensures compliance with the law and safe medication management for patients.