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21 CFR 520.1120b

§ 520.1120b Haloxon boluses.

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

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21 CFR 520.1120b, § 520.1120b Haloxon boluses, United States, version 1 as recorded 2026-07-09, yourstate.us, https://yourstate.us/provision/87178
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(a) Specifications. Each bolus contains 10.1 grams of haloxon. (b) Sponsor. See No. 000061 in § 510.600(c) of this chapter. (c) Related tolerances. See § 556.310 of this chapter. (d) Conditions of use in cattle—(1) Amount. Administered one bolus per 500 pounds body weight (35 to 50 milligrams per kilogram of body weight). Retreat in 3 to 4 weeks. (2) Indications for use. For control of gastrointestinal roundworms of the genera Haemonchus, Ostertagia, Trichostrongylus, and Cooperia. (3) Limitations. Do not treat dairy animals of breeding age or older. Do not treat within 1 week of slaughter.

Legislative history

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