Prescription Requirements, Dispensing, Labeling, and Transfers
What makes a prescription valid
A prescription must be issued for a legitimate medical purpose by a prescriber acting in the usual course of practice; the pharmacist shares "corresponding responsibility" for that judgment. Controlled substance prescriptions require the prescriber's DEA number. Schedule II: no refills; written, electronic, or (in a genuine emergency) oral with written/electronic follow-up within seven days. CIII–V: up to five refills within six months of the issue date. CII partial fills may be completed within 30 days (60 days for long-term care residents or terminally ill patients). Medicare Part D controlled substances require electronic prescribing.
Labeling
Missouri labels must show the pharmacy name and address, prescription number, date filled, patient name, prescriber, drug name/strength/quantity, directions, refills authorized, beyond-use or expiration date, and the federal caution against transferring the drug to anyone other than the patient for legend drugs. Add auxiliary labels as needed.
Transfers
Non-controlled prescription information may be transferred between pharmacies with documentation of both pharmacists, dates, and refill history. CIII–V prescriptions may be transferred once for refill purposes. A 2023 DEA rule also allows a one-time transfer of an electronic prescription for CII–V between pharmacies for initial filling at the patient's request.
Traps: counting the six months from the fill date rather than the issue date; refilling a CII because the prescriber "authorized" it; assuming a paper CII prescription can be transferred and refilled. Rule of thumb: "Six months, five refills, zero for CII."