---
kind: "section"
citation: "21 C.F.R. § 335.10"
title: "21"
number: "335.10"
heading: "Antidiarrheal active ingredients."
url: "https://uscodex.org/cfr/21/335.10"
---

# §335.10. Antidiarrheal active ingredients.


The active ingredient of the product consists of any one of the following when used within the dosage limits established for each ingredient in [§ 335.50(d)](/cfr/21/335.50.md?p=d):

- (a) **Bismuth subsalicylate.**
- (b) **Kaolin.**

## Notes

### Authority

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

### Source

Source: 68 FR 18881, April 17, 2003, unless otherwise noted.