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e-CFR data is current as of February 24, 2021

Title 21Chapter ISubchapter EPart 556Subpart B → §556.344


Title 21: Food and Drugs
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


§556.344   Ivermectin.

(a) Acceptable daily intake (ADI). The ADI for total residue of ivermectin is 5 µg/kg of body weight per day.

(b) Tolerances. The tolerances for 22,23-dihydroavermectin B1a (marker residue) are:

(1) American bison. Liver (target tissue): 15 ppb.

(2) Cattle. (i) Liver (target tissue): 1.6 ppm.

(ii) Muscle: 650 ppb.

(3) Reindeer. Liver (target tissue): 15 ppb.

(4) Sheep. Liver (target tissue): 30 ppb.

(5) Swine. (i) Liver (target tissue): 20 ppb.

(ii) Muscle: 20 ppb.

(c) Related conditions of use. See §§520.1192, 520.1195, 520.1197, 522.1192, 522.1193, 524.1193, and 558.300 of this chapter.

[84 FR 32993, July 11, 2019, as amended at 85 FR 18121, Apr. 1, 2020]

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