21 CFR 558.274

§ 558.274 Hygromycin B.

United States · 21 CFR — Food and Drugs · Status: effective

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Citation: 21 CFR 558.274, § 558.274 Hygromycin B, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87863
Permanent ID: ys:prov:87863@1
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Full text

(a) Specifications. Type A medicated articles containing 2.4 or 8 grams hygromycin B per pound (g/lb). (b) Sponsor. See No. 058198 in § 510.600(c) of this chapter for as follows: (c) Related tolerances. See § 556.330 of this chapter. (d) Special considerations. (1) Federal law restricts medicated feed containing this veterinary feed directive (VFD) drug to use by or on the order of a licensed veterinarian. See § 558.6 for additional requirements. (2) The expiration date of VFDs for hygromycin B medicated feeds must not exceed 6 months from the date of issuance. VFDs for hygromycin B shall not be refilled. (e) Conditions of use. It is used in feed as follows: (1) Chickens— (2) Swine—

Legislative history

This is a federal regulation, adopted through agency rulemaking under the Administrative Procedure Act — not enacted by a recorded vote of Congress.