Final answer:
The quantity limit when a practitioner issues multiple C-II prescriptions on the same day is determined by federal law. A practitioner can issue up to a 90-day supply of a Schedule II controlled substance, with the total quantity of prescriptions not exceeding 90 days.
Step-by-step explanation:
The quantity limit when a practitioner issues multiple C-II prescriptions on the same day is determined by federal law. According to the Controlled Substances Act (CSA), a practitioner can issue up to a 90-day supply of a Schedule II (C-II) controlled substance. However, the total quantity of the prescriptions combined cannot exceed a 90-day supply.
For example, if a practitioner prescribes a 30-day supply of a medication, they can issue three separate prescriptions on the same day, each with a 30-day supply. In this case, the patient can obtain a 90-day supply by filling each prescription at the appropriate intervals.
It's important to note that state laws may have additional requirements and restrictions regarding the issuance of multiple C-II prescriptions on the same day. Therefore, it's essential for practitioners and patients to familiarize themselves with both federal and state regulations to ensure compliance.