How many partial fillings are permitted on a CIII prescription?

The maximum number of partial fills allowed for a Schedule III (CIII) prescription is 5 total within a six-month period from the date of issuance. This means that the correct answer reflects the total number of partial fills permitted.

Under the regulations governing controlled substances, each partial filling counts toward the total, and the remaining quantity must be dispensed within those six months. This system is designed to provide flexibility to both patients and providers while ensuring that records are maintained for regulatory purposes.

The other options do not align with the regulations related to partial fillings for CIII prescriptions, as they either underestimate or overestimate the allowable number of partial fills, or suggest that it is solely at the physician's discretion, which does not accurately reflect the established guidelines.