---
kind: "section"
citation: "21 U.S.C. § 391"
title: "21"
title_heading: "Food and Drugs"
number: "391"
heading: "Separability clause"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/21/391"
units:
  - "Chapter 9 — Federal Food, Drug, and Cosmetic Act"
  - "Subchapter X — Miscellaneous"
---

# §391. Separability clause


If any provision of this chapter is declared unconstitutional, or the applicability thereof to any [person](/usc/21/321.md?p=e) or circumstances is held invalid, the constitutionality of the remainder of the chapter and the applicability thereof to other [persons](/usc/21/321.md?p=e) and circumstances shall not be affected thereby.


## Source credit

(June 25, 1938, ch. 675, § 1001, formerly § 901, 52 Stat. 1059; renumbered § 1001, Pub. L. 111–31, div. A, title I, § 101(b)(2), June 22, 2009, 123 Stat. 1784.)