subchapter_subject: "ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS"
part_code: "520"
part_subject: "ORAL DOSAGE FORM NEW ANIMAL DRUGS"
subpart_code: "B"
subpart_subject: "Specific Administrative Rulings and Decisions"
section_number: "520.1120b"
section_subject: "Haloxon boluses."
cfr_reference: "21 CFR 520.1120b"
title_name: "Title 21"
title_subject: "Food and Drugs"
parts_covered: "Parts 500 to 599"
revised_date: "Revised as of April 1, 2019"
publication_date: "As of April 1, 2019"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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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.