Electronic Code of Federal Regulations

We invite you to try out our new beta eCFR site at https://ecfr.federalregister.gov. We have made big changes to make the eCFR easier to use. Be sure to leave feedback using the Feedback button on the bottom right of each page!

e-CFR data is current as of April 8, 2021

Title 21 → Chapter I → Subchapter E → Part 522 → §522.234

Browse Previous | Browse Next

Title 21: Food and Drugs
PART 522—IMPLANTATION OR INJECTABLE DOSAGE FORM NEW ANIMAL DRUGS

§522.234 Butamisole.

(a) Specifications. Each milliliter of solution contains 11 milligrams (mg) butamisole hydrochloride.

(b) Sponsors. See Nos. 054771 and 058198 in §510.600(c) of this chapter.

(c) Conditions of use in dogs—(1) Amount. Administer 0.1 mg per pound of body weight by subcutaneous injection. In problem cases, retreatment for whipworms may be necessary in approximately 3 months. For hookworms, a second injection should be given 21 days after the initial treatment.

(2) Indications for use. For the treatment of infections with whipworms (Trichuris vulpis), and the hookworm (Ancylostoma caninum).

(3) Limitations. Federal law restricts this drug to use by or on the order of a licensed veterinarian.

[79 FR 16184, Mar. 25, 2014, as amended at 86 FR 14819, Mar. 19, 2021]

Need assistance?