# prescription medications containing controlled substances — Postal shipping restrictions by item category

For prescription medications containing controlled substances, carrier is USPS; restriction type is allowed; scope is domestic mail - from authorized dispensers; conditions is Prescription medicines containing mailable narcotic drugs (controlled substances) may be mailed only by drug manufacturers or their registered agents, pharmacies, medical practitioners, or other authorized dispensers, as permitted by 21 CFR Section 1307.11, recorded from its source on 2026-08-04.

- **Item category:** prescription medications containing controlled substances _(unconfirmed — we could not tie this to the quote below)_
- **Carrier:** USPS _(our reading, not quoted from the source)_
- **Restriction type:** allowed _(our reading, not quoted from the source)_
- **Scope:** domestic mail - from authorized dispensers _(our reading, not quoted from the source)_
- **Conditions:** Prescription medicines containing mailable narcotic drugs (controlled substances) may be mailed only by drug manufacturers or their registered agents, pharmacies, medical practitioners, or other authorized dispensers, as permitted by 21 CFR Section 1307.11 _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> Prescription medicines containing mailable narcotic drugs (controlled substances), when mailed by drug manufacturers or their registered agents, pharmacies, medical practitioners, or other authorized dispensers

## Source

- https://pe.usps.com/text/pub52/pub52c4_020.htm

Last verified: 2026-08-04. Review by: 2027-08-04.
Part of [Postal shipping restrictions by item category](https://referencesource.org/shipping-restrictions-by-class/).