21 CFR § 558.430 - Nystatin.

---
identifier: "/us/cfr/t21/s558.430"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 558.430 - Nystatin."
title_number: 21
title_name: "Food and Drugs"
section_number: "558.430"
section_name: "Nystatin."
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: "558"
part_name: "NEW ANIMAL DRUGS FOR USE IN ANIMAL FEEDS"
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. 354, 360b, 360ccc, 360ccc-1, 371."
regulatory_source: "40 FR 13959, Mar. 27, 1975, unless otherwise noted."
cfr_part: "558"
---


# 558.430 Nystatin.

(a) *Specifications.* Type A medicated article containing 20 grams of nystatin activity per pound.

(b) *Sponsor.* See No. 054771 in § 510.600(c) of this chapter.

(c) *Related tolerances.* See § 556.470 of this chapter.

(d) *Conditions of use*—

| Amount in grams/ton | Indications for use | Limitations | Sponsor |
| --- | --- | --- | --- |
| (1) 50 | Growing and laying chickens and growing turkeys: As an aid in the control of crop mycosis and mycotic diarrhea () |  | 054771 |
| (2) 100 | Growing and laying chickens and growing turkeys: For the treatment of crop mycosis and mycotic diarrhea () | To be fed for 7 to 10 days | 054771 |

[41 FR 11002, Mar. 15, 1976, as amended at 51 FR 7399, Mar. 3, 1986; 52 FR 2686, Jan. 26, 1987; 53 FR 40729, Oct. 18, 1988; 55 FR 8461, Mar. 8, 1990; 57 FR 8578, Mar. 11, 1992; 79 FR 13545, Mar. 11, 2014; 85 FR 45310, July 28, 2020]