Which of the following is true regarding the dispensing of controlled substances?

The answer regarding the dispensing of controlled substances reflects a significant aspect of pharmacy law, particularly relating to the handling of Schedule II (C2) medications. Partial fills of C2 prescriptions are indeed permissible under specific conditions, which is why this option is correct.

According to federal and state regulations, a pharmacist may partially fill a C2 prescription if requested by the patient or prescriber, provided that the total quantity dispensed does not exceed the total prescribed amount. Notably, these partial fills must be completed within a certain timeframe—typically, the prescription must be filled in its entirety within 30 days of the date on the prescription. This regulation caters to patients who may not require the full amount of medication immediately, or who may have circumstances that prevent them from taking the full prescription at once, thereby promoting better adherence and safety.

This provision demonstrates an understanding of patient needs while maintaining control over the dispensing of highly regulated substances, ensuring that C2 prescriptions are managed responsibly and in a manner that is compliant with legal standards.

The other options suggest situations that do not align with established pharmacy laws. For example, the assertion that C2 prescriptions cannot be partially filled contradicts the relevant regulations. Stating that C2 prescriptions can be filled without a valid prescription