What are withdrawal times (periods) for meat and milk, and where can they be found?

Beef Cattle, Dairy September 06, 2007 Print Friendly and PDF
Withdrawal periods reflect the amount of time necessary for an animal to metabolize an administered product and the amount of time necessary for the product concentration level in the tissues to decrease to a safe, acceptable level. Every federally approved drug or animal health product has a withdrawal period printed on the product label or package insert. Products carry meat withdrawal periods ranging from 0 to 60 days. Examples for meat range from no withdrawal period with ceftiofur, 4-15 days with different penicillin products, to 28 days with Pirlimycin. Animals treated with a product that has a withdrawal period of 45 days should be withheld from sale or slaughter for at least 45 days. Withdrawal times are not the same for all drugs. Examples for milk include: Pirlimycin, 36 hours; Cloxacillin, 48 Hours, Amoxicillin, 60 hours, Penicillin, 72 hours, and Cephapirin, 96 hours. Milk produced during that period must be disposed of. Dairy animals to be slaughtered must be withheld for the meat withdrawal period specified. Withdrawal periods may be extended when combinations of drugs are used or when drugs are used in an extra-label manner. In these situations or at any time a producer is uncertain of a specific drug withdrawal period, a veterinarian should be consulted. Source: http://www.ext.vt.edu/pubs/dairy/404-403/404-403.html

Connect with us

  • Twitter
  • Facebook
  • YouTube


This is where you can find research-based information from America's land-grant universities enabled by eXtension.org



This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.