21 CFR 556.275 - Fenbendazole.

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§ 556.275 Fenbendazole.

(a) Acceptable daily intake (ADI). The ADI for total residues of fenbendazole is 40 micrograms per kilogram of body weight per day.

(b) Tolerances -

(1) Cattle -

(i) Liver (the target tissue). The tolerance for parent fenbendazole (the marker residue) is 0.8 part per million (ppm).

(ii) Muscle. The tolerance for parent fenbendazole (the marker residue) is 0.4 ppm.

(iii) Milk. The tolerance for fenbendazole sulfoxide metabolite (the marker residue in cattle milk) is 0.6 ppm.

(2) Swine -

(i) Liver (the target tissue). The tolerance for parent fenbendazole (the marker residue) is 3.2 ppm.

(ii) Muscle. The tolerance for parent fenbendazole (the marker residue) is 2 ppm.

(3) Chickens -

(i) Liver (the target tissue). The tolerance for fenbendazole sulfone (the marker residue) is 5.2 ppm.

(ii) [Reserved]

(4) Turkeys -

(i) Liver (the target tissue). The tolerance for fenbendazole sulfone (the marker residue) is 6 ppm.

(ii) Muscle. The tolerance for fenbendazole sulfone (the marker residue) is 2 ppm.

(5) Goats -

(i) Liver (the target tissue). The tolerance for parent fenbendazole (the marker residue) is 0.8 ppm.

(ii) Muscle. The tolerance for parent fenbendazole (the marker residue) is 0.4 ppm.

(c) Related conditions of use. See §§ 520.905a, 520.905c, 520.905d, 520.905e, and 558.258 of this chapter.

[65 FR 20733, Apr. 18, 2000, as amended at 65 FR 41588, July 6, 2000; 65 FR 50914, Aug. 22, 2000; 81 FR 22524, Apr. 18, 2016]

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United States Code

Title 21 published on 2015-04-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 21 CFR Part 556 after this date.

  • 2015-10-13; vol. 80 # 197 - Tuesday, October 13, 2015
    1. 80 FR 61293 - New Animal Drugs; Approval of New Animal Drug Applications; Withdrawal of Approval of a New Animal Drug Application; Change of Sponsor; Change of Sponsor's Address
      GPO FDSys XML | Text
      DEPARTMENT OF HEALTH AND HUMAN SERVICES, Food and Drug Administration
      Final rule; technical amendment.
      This rule is effective October 13, 2015, except for the amendment to 21 CFR 558.460, which is effective October 23, 2015.
      21 CFR Parts 510, 520, 522, 524, 556, and 558