21 CFR § 524.402 - Chlorhexidine.

---
identifier: "/us/cfr/t21/s524.402"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 524.402 - Chlorhexidine."
title_number: 21
title_name: "Food and Drugs"
section_number: "524.402"
section_name: "Chlorhexidine."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "E"
subchapter_name: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_number: "524"
part_name: "OPHTHALMIC AND TOPICAL DOSAGE FORM NEW ANIMAL DRUGS"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 360b."
regulatory_source: "40 FR 13873, Mar. 27, 1975, unless otherwise noted."
cfr_part: "524"
---


# 524.402 Chlorhexidine.

(a) *Specifications.* Each gram of ointment contains 10 milligrams chlorhexidine acetate.

(b) *Sponsors.* See Nos. 054771 and 058829 in § 510.600(c) of this chapter.

(c) *Conditions of use in dogs, cats, and horses*—(1) *Indications for use.* For use as a topical antiseptic ointment for surface wounds.

(2) *Limitations.* Do not use in horses intended for human consumption.

[72 FR 265, Jan. 4, 2007, as amended at 79 FR 10967, Feb. 27, 2014]