21 CFR § 520.376 - Cephalexin.

---
identifier: "/us/cfr/t21/s520.376"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 520.376 - Cephalexin."
title_number: 21
title_name: "Food and Drugs"
section_number: "520.376"
section_name: "Cephalexin."
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: "520"
part_name: "ORAL 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 13838, Mar. 27, 1975, unless otherwise noted."
cfr_part: "520"
---


# 520.376 Cephalexin.

(a) *Specifications.* Each chewable tablet contains 75, 150, 300, or 600 milligrams (mg) cephalexin.

(b) *Sponsor.* See No. 051311 in § 510.600(c) of this chapter.

(c) *Conditions of use*—(1) *Dogs*—(i) *Amount.* Administer 22 mg per kilogram of body weight twice daily for 28 days.

(ii) *Indications for use.* For the treatment of secondary superficial bacterial pyoderma in dogs caused by susceptible strains of *Staphylococcus pseudintermedius.*

(iii) *Limitations.* Federal law restricts this drug to use by or on the order of a licensed veterinarian.

(2) [Reserved]

[77 FR 47512, Aug. 9, 2012]