What is a pharmacist's responsibility when filling a controlled substance prescription? Answer in under 100 words. Cite only eCFR (www.ecfr.gov) sources.
Details / How it works
Corresponding responsibility of the pharmacist
Per 21 CFR 1306.04(a), the responsibility for proper prescribing and dispensing of controlled substances rests on the prescribing practitioner, but a corresponding responsibility rests with the pharmacist who fills the prescription.
To be valid, a controlled substance prescription must be:
- Issued for a legitimate medical purpose by an individual practitioner (physician, dentist, veterinarian, or other licensed provider);
- Issued in the usual course of the practitioner's professional practice or in legitimate, authorized research.
An order purporting to be a prescription that does not meet these criteria is not a valid prescription under section 309 of the Controlled Substances Act (21 U.S.C. 829).
Consequences of filling an illegitimate prescription
A pharmacist who knowingly fills such a purported prescription — and the person who issued it — is subject to the criminal penalties provided for controlled-substance violations, including those under 21 U.S.C. 841 and 21 U.S.C. 843.
Numbers & thresholds
| Threshold / requirement | Value |
|---|---|
| Maximum amount dispensed in an emergency oral authorization (Schedule II) | Amount adequate to treat the patient during the emergency period |
| Deadline for prescriber to deliver follow-up written prescription after emergency oral order | Within 7 days |
| Manner of delivery of follow-up written prescription | In person, or by mail postmarked within the 7-day period |
| Required annotation on follow-up paper prescription | "Authorization for Emergency Dispensing" and the date of the oral order |
| Record-keeping rule for original/facsimile Schedule II prescriptions | 21 CFR 1304.04(h) |
Exceptions & edge cases
Emergency oral authorizations (Schedule II) — 21 CFR 1306.11(d)
In a defined emergency situation under 21 CFR 290.10, a pharmacist may dispense a Schedule II controlled substance on an oral order from an individual practitioner, provided the pharmacist:
- Limits the quantity to the amount adequate to treat the patient during the emergency;
- Immediately reduces the prescription to writing, including all information required by 21 CFR 1306.05 except the prescriber's signature;
- Makes a reasonable effort to determine that the oral authorization came from a registered individual practitioner (e.g., a callback to the telephone-directory number);
- Notifies the nearest office of the DEA (the Administration) if the prescribing individual practitioner fails to deliver the required written prescription — failure to notify voids the authority to dispense without a written prescription.
Central fill pharmacies are not authorized under this paragraph to prepare Schedule II prescriptions on an oral authorization from a retail pharmacist or individual practitioner.
Sources
- [1]U.S. Government Publishing Office / Drug Enforcement Administration — 21 CFR 1306.04 — Purpose of a controlled substance prescription — corresponding responsibility · as of 2026-08-28
- [2]U.S. Government Publishing Office / Drug Enforcement Administration — 21 CFR 1306.11 — Requirements for Schedule II controlled substance prescriptions · as of 2026-08-28
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