21 CFR § 529.1044a - Gentamicin solution for infusion.

---
identifier: "/us/cfr/t21/s529.1044a"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 529.1044a - Gentamicin solution for infusion."
title_number: 21
title_name: "Food and Drugs"
section_number: "529.1044a"
section_name: "Gentamicin solution for infusion."
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: "529"
part_name: "CERTAIN OTHER 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 13881, Mar. 27, 1975, unless otherwise noted."
cfr_part: "529"
---


# 529.1044a Gentamicin solution for infusion.

(a) *Specifications.* Each milliliter of solution contains 50 or 100 milligrams gentamicin sulfate.

(b) *Sponsors.* See Nos. 000061, 016592, 054771, 058005, 058198, 061133, and 069043 in § 510.600(c) of this chapter.

(c) *Conditions of use in horses*—(1) *Amount.* Infuse 2 to 2.5 grams per day for 3 to 5 days during estrus.

(2) *Indications for use.* For control of bacterial infections of the uterus (metritis) and as an aid in improving conception in mares with uterine infections caused by bacteria sensitive to gentamicin.

(3) *Limitations.* Do not use in horses intended for human consumption. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[71 FR 51727, Aug. 31, 2006, as amended at 78 FR 17597, Mar. 22, 2013; 78 FR 21060, Apr. 9, 2013; 79 FR 10973, Feb. 27, 2014; 83 FR 48947, Sept. 28, 2018; 84 FR 8974, Mar. 13, 2019; 86 FR 14821, Mar. 19, 2021; 88 FR 55567, Aug. 16, 2023]