Food Animal Drug Regulations

Exercise 4 Identifying withholding times

Exercises

Level A. Use the withdrawal recommendation look up http://www.farad.org/wdilookup/ to find the withholding on lidocaine used for a local block in a dairy cow.

Exercises

Level A. What about xylazine? Is it FDA approved? Can you find withholding information?

CAUTION

Obviously we often use drugs that are not FDA-approved but that does mean we have to carefully follow AMDUCA guidelines (and are not uniformly good at doing so). While we tend to consider FARAD calculated withholding times as “approved” this does not equate to FDA approved drugs and label withholding.

RESOURCES

If the drug is approved, the label should have the recommended withholding information (or a google search for the drug label should work).

See this example for Ceftiofur in swine

Default withholding periods in New Zealand

 

 

License

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Large Animal Surgery - Supplemental Notes by Erin Malone, DVM, PhD; Elaine Norton, DVM PhD; Erica Dobbs, DVM; and Ashley Ezzo, DVM is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.