What must be done if the balance of a partial fill of a C2 is not dispensed within the specified timeframe?

When a partial fill of a Schedule II controlled substance (C2) is not dispensed within the specified timeframe, it is essential to notify the prescriber. This requirement is rooted in regulatory guidelines that ensure controlled substances are managed appropriately and that patients receive their medications without undue delay.

If the partial fill is not completed, it may be necessary for the prescriber to reassess the patient's needs or to provide a new prescription. This is particularly important in the context of controlled substances, where there are strict regulations governing dispensing to prevent abuse and ensure patient safety. The prescriber can then make a decision based on the current condition of the patient or provide guidance on continuing with the medication as prescribed.

The other actions, while potentially important in the context of pharmacy operations, do not directly address the necessary communication with the prescriber regarding the incomplete dispensing of a controlled substance.