§ 556.344. Ivermectin.
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/us/cfr/t21/s§ 556.344·A research copy — for the controlling text, always check the official state or federal source. Not legal advice.
(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]