---
kind: "section"
citation: "21 C.F.R. § 333.210"
title: "21"
number: "333.210"
heading: "Antifungal active ingredients."
url: "https://uscodex.org/cfr/21/333.210"
---

# §333.210. Antifungal active ingredients.


The active ingredient of the product consists of any one of the following within the specified concentration established for each ingredient:

- (a) **Clioquinol 3 percent.**
- (b) **Haloprogin 1 percent.**
- (c) **Miconazole nitrate 2 percent.**
- (d) **Povidone-iodine 10 percent.**
- (e) **Tolnaftate 1 percent.**
- (f) Undecylenic acid, calcium undecylenate, copper undecylenate, and zinc undecylenate may be used individually or in any ratio that provides a total undecylenate concentration of 10 to 25 percent.
- (g) **Clotrimazole 1 percent.**

## Notes

### Amendments

[58 FR 49898, Sept. 23, 1993, as amended at 67 FR 5943, Feb. 8, 2002]

### Source

Source: 58 FR 49898, Sept. 23, 1993, unless otherwise noted.

### Authority

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

### Source

Source: 52 FR 47322, Dec. 11, 1987, unless otherwise noted.

### Amendments

[58 FR 49898, Sept. 23, 1993, as amended at 67 FR 5943, Feb. 8, 2002]