Learn About The Law
Get help with your legal needs
FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.
Current as of January 02, 2025 | Updated by Findlaw Staff
(a) Specifications. Each milliliter of suspension contains:
(1) 90.6 milligrams (mg) oxfendazole (9.06 percent).
(2) 225.0 mg oxfendazole (22.5 percent).
(b) Sponsor. See Nos. 000010 and 054771 in § 510.600(c) of this chapter.
(c) Related tolerances. See § 556.495 of this chapter.
(d) Special considerations. See § 500.25 of this chapter. If labeled for administration by stomach tube: Federal law restricts this drug to use by or on the order of a licensed veterinarian.
(e) Conditions of use—
(1) Horses. Use the product described in paragraph (a)(1) of this section as follows:
(i) Amount. 10 mg per kilogram (/kg) of body weight by stomach tube or dose syringe. Horses maintained on premises where reinfection is likely to occur should be retreated in 6 to 8 weeks.
(ii) Indications for use. For removal of large roundworms (Parascaris equorum), mature and 4th stage larvae pinworms (Oxyuris equi), large strongyles (Strongylus edentatus, S. vulgaris, and S. equinus), and small strongyles.
(iii) Limitations. Withholding feed or water prior to use is unnecessary. Administer drug with caution to sick or debilitated horses. Do not use in horses intended for human consumption.
(2) Cattle. Use the products described in paragraphs (a)(1) and (a)(2) of this section as follows:
(i) Amount. 4.5 mg/kg of body weight by dose syringe. Treatment may be repeated in 4 to 6 weeks.
(ii) Indications for use. For the removal and control of: lungworms (Dictyocaulus viviparus—adult, L4); stomach worms: barberpole worms (Haemonchus contortus and H. placei—adult), small stomach worms (Trichostrongylus axei—adult), brown stomach worms (Ostertagia ostertagi—adult, L4, inhibited L4); intestinal worms; nodular worms (Oesophagostomum radiatum—adult), hookworms (Bunostomum phlebotomum—adult), small intestinal worms (Cooperia punctata, C. oncophora, and C. surnabada—adult, L4), and tapeworms (Moniezia benedeni—adult).
(iii) Limitations. Cattle must not be slaughtered until 7 days after treatment. Because a withdrawal time in milk has not been established, do not use in female dairy cattle of breeding age.
Cite this article: FindLaw.com - Code of Federal Regulations Title 21. Food and Drugs § 21.520.1630 Oxfendazole suspension - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-21-food-and-drugs/cfr-sect-21-520-1630/
FindLaw Codes may not reflect the most recent version of the law in your jurisdiction. Please verify the status of the code you are researching with the state legislature before relying on it for your legal needs.
A free source of state and federal court opinions, state laws, and the United States Code. For more information about the legal concepts addressed by these cases and statutes, visit FindLaw’s Learn About the Law.
Get help with your legal needs
FindLaw’s Learn About the Law features thousands of informational articles to help you understand your options. And if you’re ready to hire an attorney, find one in your area who can help.
Search our directory by legal issue
Enter information in one or both fields (Required)