Fenbendazole powder.

(a) Specifications. Each 2-ounce packet contains 2.27 grams (4 percent) fenbendazole. (b) Sponsor. See No. 000061 in § 510.600(c) of this chapter. (c) Related tolerances. See § 556.275 of this chapter. (d) Conditions of use. It is administered to swine as follows: (1) Amount. 3 milligrams fenbendazole per kilogram body weight per day (1.36 milligrams per pound per day). (2) Indications for use. For removal and control of large roundworms ( Ascaris suum ); lungworms ( Metastrongylus apri ); nodular worms ( Oesophagostomum dentatum, O. quadrispinulatum ); small stomach worms ( Hyostrongylus rubidus ); whipworms ( Trichuris suis ); and kidneyworms ( Stephanurus dentatus — mature and immature). (3) Limitations. Thoroughly mix the contents of the packet(s) with swine ration and administer according to label directions. Feed as sole ration for 3 consecutive days. Can be fed to pregnant sows. No prior withdrawal of feed or water is necessary. Consult your veterinarian for assistance in the diagnosis, treatment, and control of parasitism. [49 FR 18090, Apr. 27, 1984, as amended at 49 FR 20485, May 15, 1984; 66 FR 47960, Sept. 17, 2001; 70 FR 32489, June 3, 2005; 74 FR 61516, Nov. 25, 2009; 83 FR 48945, Oct. 9, 2018]