21 CFR § 558.295 - Iodinated casein.

---
identifier: "/us/cfr/t21/s558.295"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 558.295 - Iodinated casein."
title_number: 21
title_name: "Food and Drugs"
section_number: "558.295"
section_name: "Iodinated casein."
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"
---


# 558.295 Iodinated casein.

(a) *Specifications.* Type A medicated article containing iodinated casein.

(b) *Sponsor. See* No. 017762 in § 510.600(c) of this chapter.

(c) *Conditions of use*—(1) *Ducks*—

| Amount in grams/ton | Indications for use | Limitations | Sponsor |
| --- | --- | --- | --- |
| (i) 100 to 200 | Growing ducks: For increased rate of weight gain |  | 017762 |
| (ii) [Reserved] |  |  |  |

(2) *Dairy cows*—

| Amount in grams/pound | Indications for use | Limitations | Sponsor |
| --- | --- | --- | --- |
| (1) 0.5 to 1.5 per 100 lb of body weight | Dairy cows: For increased milk production | This drug is effective for limited periods of time, and the effectiveness is limited to the declining phase of lactation. Administration must be accompanied with increased feed intake. Administration may increase heat sensitivity of the animal | 017762 |
| (2) [Reserved] |  |  |  |

[85 FR 45309, July 28, 2020, as amended at 86 FR 14823, Mar. 19, 2021]