GroundRules
21 CFR 556.275: Fenbendazole.
Where this section sits in the code
- Title 21—Food and Drugs
- CHAPTER I—FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES
- SUBCHAPTER E—ANIMAL DRUGS, FEEDS, AND RELATED PRODUCTS
- PART 556—TOLERANCES FOR RESIDUES OF NEW ANIMAL DRUGS IN FOOD
- Subpart B—Specific Tolerances for Residues of Approved and Conditionally Approved New Animal Drugs
(a) Acceptable daily intake (ADI). The ADI for total residue of fenbendazole is 40 µg/kg of body weight per day.
(b) Tolerances. The tolerances for fenbendazole are:
(1) Cattle. (i) Liver (target tissue): 0.8 ppm fenbendazole (marker residue).
(ii) Milk: 0.22 ppm fenbendazole sulfoxide (marker residue).
(2) Chickens. (i) Liver (target tissue): 5.2 ppm fenbendazole sulfone (marker residue).
(ii) Eggs: 1.8 ppm fenbendazole sulfone (marker residue).
(3) Goats. (i) Liver (target tissue): 0.8 ppm fenbendazole (marker residue).
(ii) [Reserved]
(4) Swine. (i) Liver (target tissue): 3.2 ppm fenbendazole (marker residue).
(ii) [Reserved]
(5) Turkeys. (i) Liver (target tissue): 6 ppm fenbendazole sulfone (marker residue).
(ii) [Reserved]
(6) Quail. (i) Liver (target tissue): 6 ppm fenbendazole sulfone (marker residue).
(ii) [Reserved]
(c) Related conditions of use. See §§ 520.905a, 520.905b, 520.905c, 520.905d, and 558.258 of this chapter.
Collected 2026-08-27T02:24:47Z. Source file · JSON