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U.S. Department of Health and Human Services

CFR - Code of Federal Regulations Title 21

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The information on this page is current as of April 1 2019.

For the most up-to-date version of CFR Title 21, go to the Electronic Code of Federal Regulations (eCFR).

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Help | More About 21CFR
[Code of Federal Regulations]
[Title 21, Volume 6]
[Revised as of April 1, 2019]
[CITE: 21CFR556.344]



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

Sec. 556.344 Ivermectin.

(a) Acceptable daily intake (ADI). The ADI for total residue of ivermectin is 1 [micro]g/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): 100 ppb.

(ii) Muscle: 10 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.

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