21 CFR § 556.430 - Neomycin.

---
identifier: "/us/cfr/t21/s556.430"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 556.430 - Neomycin."
title_number: 21
title_name: "Food and Drugs"
section_number: "556.430"
section_name: "Neomycin."
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: "556"
part_name: "TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD"
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. 342, 360b, 371."
regulatory_source: "84 FR 32993, July 11, 2019, unless otherwise noted."
cfr_part: "556"
---


# 556.430 Neomycin.

(a) *Acceptable daily intake (ADI).* The ADI for total residue of neomycin is 6 µg/kg of body weight per day.

(b) *Tolerances.* The tolerances for neomycin are:

(1) *Cattle.* (i) Kidney (target tissue): 7.2 ppm.

(ii) Liver: 3.6 ppm.

(iii) Muscle: 1.2 ppm.

(iv) Fat: 7.2 ppm.

(v) Milk: 0.15 ppm.

(2) *Sheep and goats.* (i) Kidney (target tissue): 7.2 ppm.

(ii) Liver: 3.6 ppm.

(iii) Muscle: 1.2 ppm.

(iv) Fat: 7.2 ppm.

(v) Milk: 0.15 ppm.

(3) *Swine.* (i) Kidney (target tissue): 7.2 ppm.

(ii) Liver: 3.6 ppm.

(iii) Muscle: 1.2 ppm.

(iv) Fat: 7.2 ppm.

(4) *Turkeys.* (i) Skin with adhering fat: 7.2 ppm.

(ii) Liver: 3.6 ppm.

(iii) Muscle: 1.2 ppm.

(c) *Related conditions of use.* See §§ 520.1484, 524.1600b, 558.365, and 558.455 of this chapter.