---
kind: "section"
citation: "21 C.F.R. § 338.3"
title: "21"
number: "338.3"
heading: "Definition."
url: "https://uscodex.org/cfr/21/338.3"
---

# §338.3. Definition.


As used in this part:

Nighttime sleep-aid. A drug that is useful for the relief of occasional sleeplessness by individuals who have difficulty falling asleep.


## Notes

### Authority

Authority: 21 U.S.C. 321, 351, 352, 353, 355, 360, 371.

### Source

Source: 54 FR 6826, Feb. 14, 1989, unless otherwise noted.