Under what circumstance can a C-II prescription be partially filled?

A partially filled prescription for a C-II medication is permissible under specific circumstances that are outlined in federal regulations. When the pharmacist is unable to deliver the full quantity of a C-II substance to the patient within 72 hours, they may partially fill the prescription to ensure the patient receives at least some of the medication they require without having to wait longer.

This allowance is particularly relevant in situations where there are supply shortages or logistical issues that prevent the immediate filling of the entire prescription. The regulation mandates that the pharmacist should inform the prescriber of the remaining quantity that was not filled and that the remaining medication must be dispensed within a maximum of 72 hours following the initial fill. This approach helps to balance patient needs with the regulatory constraints surrounding controlled substances.

In contrast, the other options do not align with the established regulations for partially filling C-II prescriptions. For instance, while a patient may request a lower quantity, this does not constitute a legitimate reason under federal law for partial filling. Special authorization from a doctor or specific state medication lists do not supersede federal regulations regarding C-II prescription dispensing.