21 CFR § 556.360 - Lincomycin.

---
identifier: "/us/cfr/t21/s556.360"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 556.360 - Lincomycin."
title_number: 21
title_name: "Food and Drugs"
section_number: "556.360"
section_name: "Lincomycin."
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"
---


# 556.360 Lincomycin.

(a) *Acceptable daily intake (ADI).* The ADI for total residue of lincomycin is 25 µg/kg of body weight per day.

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

(1) *Chickens.* Edible tissues (excluding eggs): Not required.

(2) *Swine.* (i) Liver: 0.6 ppm.

(ii) Muscle: 0.1 ppm.

(3) *Honey.* 750 ppb.

(c) *Related conditions of use.* See §§ 520.1263b, 522.1260, and 558.325 of this chapter.

[84 FR 32993, July 11, 2019, as amended at 85 FR 18121, Apr. 1, 2020]

At 86 FR 13188, Mar. 8, 2021, in § 556.360, paragraph (c) was amended; however, the amendment could not be incorporated due to inaccurate amendatory instruction.