What is required when partially filling a Schedule II substance?

When partially filling a Schedule II controlled substance prescription, it is essential to complete the remaining supply within 72 hours from the date of the original filling. This regulation ensures that patients have access to their medication while also maintaining strict control over the dispensing of powerful narcotics and addictive substances.

If the quantity of medication dispensed is less than the total prescribed amount, the pharmacy must ensure that the remaining quantity is provided to the patient within this specified time frame. If the remaining quantity is not picked up within 72 hours, the prescription is no longer valid, and the patient would need a new prescription to obtain the remaining medication. This rule reflects a balance between patient needs and regulatory measures designed to prevent misuse and diversion of controlled substances.