Final answer:
Schedule III controlled substance prescriptions can have partial fillings but must be filled within 30 days of the prescription date and cannot exceed the total prescribed amount. Regulations may vary by state.
Step-by-step explanation:
The number of partial fillings allowed on a CIII prescription (controlled substance in schedule III) can be affected by various factors, including federal laws, state laws, and specific pharmacy policies. Generally speaking, the federal law does allow partial fillings of schedule III controlled substances. However, each partial fill must be done within 30 days of the original date on the prescription. Additionally, the total quantity of partial fills must not exceed the total quantity prescribed. It is always advisable to be aware of the current regulations as they may change and also to consider state laws which may have stricter rules.