21 CFR 556.344 - Ivermectin.
(a) Acceptable Daily Intake (ADI). The ADI for total residues of ivermectin is 5 micrograms per kilogram of body weight per day.
(b) Tolerances -
(1) Liver. A tolerance is established for 22,23-dihydroavermectin B1a (marker residue) in liver (target tissue) as follows:
(i) Cattle. 1.6 parts per million.
(ii) Swine. 20 parts per billion.
(iii) Sheep. 30 parts per billion.
(iv) Reindeer. 15 parts per billion.
(v) American bison. 15 parts per billion.
(2) Muscle. Muscle residues are not indicative of the safety of other edible tissues. A tolerance is established for 22,23-dihydroavermectin B1a (marker residue) in muscle as follows:
(i) Swine. 20 parts per billion.
(ii) Cattle. 650 parts per billion.
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.