U.S. flag An official website of the United States government
  1. Home
  2. Animal & Veterinary
  3. Products
  4. Import & Exports
  5. Import Tolerances
  1. Import & Exports

Import Tolerances

The Federal Food, Drug, and Cosmetic Act (FD&C Act), as amended by the Animal Drug Availability Act of 1996 (ADAA), provides a basis for legally marketing food of animal origin that is imported into the United States and contains residues of animal drugs that are not approved or conditionally approved in the United States (unapproved new animal drugs). The ADAA granted the Food and Drug Administration the authority to establish or revoke tolerances for residues of such unapproved new animal drugs present in imported, animal-derived food products. It is unlawful to import animal-derived food that bears or contains residues of an unapproved new animal drug unless an import tolerance has been established for residues of that drug and any residues do not exceed that tolerance. The procedures and information needed to establish, amend, or revoke import tolerances for animal drugs are published in the FEDERAL REGISTER (FR Vol. 86 No. 180 pg. 52401, September 21, 2021).

The Center for Veterinary Medicine (CVM) Office of New Animal Drug Evaluation (ONADE) can receive and process electronic submissions for import tolerance files. Submissions to CVM can be made after first registering with FDA’s Electronic Submissions Gateway (ESG) and CVM’s Electronic Submission System. Additional information and a user guide on eSubmitter can be obtained at the CVM eSubmitter Resource Center or the “Getting Started with eSubmitter” websites. Contact [email protected] for help with the ESG or [email protected] for help using CVM’s eSubmitter tool.

To obtain additional information on how to request establishment of an import tolerance, please contact: Dr. Charli M. Long, Division of Human Food Safety (HFV-150), Center for Veterinary Medicine, 7500 Standish Place, Rockville, MD 20855-2733; phone: 240-402-0580; email: [email protected].

The following tolerances have been established for residues of these unapproved new animal drugs in imported food:

Requester Drug Species Import Tolerances for Drug Residues in Edible Tissues Year Established Public Documents
Zoetis Inc. hexaflumuron salmonids 0.5 ppm for hexaflumuron in muscle with adhering skin 2021 FOI Summary 1
Intervet, Inc. emamectin salmonids 100 ppb for emamectin B1a in muscle with adhering skin 2019 FOI Summary 1
ACD Pharmaceuticals benzocaine Atlantic salmon and rainbow trout 50 ppb benzocaine in muscle with adhering skin 2018 FOI Summary 1
Novartis Animal Health US, Inc. lufenuron salmonids 1.35 ppm lufenuron in muscle/adhering skin 2016 FOI Summary 1
Elanco Animal Health monensin sheep 100 parts per billion (ppb) monensin in fat
20 ppb monensin in liver
10 ppb monensin in muscle
10 ppb monensin in kidney
2016 FOI Summary 1
FVG Ltd. azamethiphos salmonids 0.02 ppm azamethiphos in muscle/adhering skin 2016 FOI Summary 1
Elanco Animal Health monepantel sheep 7 ppm monepantel sulfone in fat
5 ppm monepantel sulfone in liver
2 ppm monepantel sulfone in kidney
0.7 ppm monepantel sulfone in muscle
2016 FOI Summary 1
Skretting Agricultural Research Center teflubenzuron Atlantic salmon 0.5 ppm teflubenzuron in muscle/adhering skin 2014 FOI Summary 1
Ciba-Geigy Corporation fluazuron cattle 7 ppm fluazuron in fat
0.5 ppm fluazuron in liver
0.5 ppm fluazuron in kidney
7 ppm fluazuron in muscle

Persons using assistive technology may not be able to fully access information in these documents. For assistance, please call 240-402-7002.

1Under the provisions of the Freedom of Information Act (FOIA) and 21 CFR part 20, a summary of the basis of approval (FOI Summary) has been prepared.

2Based on its review of an environmental assessment (EA) submitted by the sponsor, the Agency has concluded that this action will not have a significant impact on the human environment and that an environmental impact statement is not required. A finding of no significant impact (FONSI) has been prepared.

Back to Top