U.S. audiences only.
Why is Zilmax off the market?

Despite years of safe use, a question was raised about Zilmax’s impact on animal well-being. Animal scientists from the USDA and seven independent universities evaluated Zilmax’s impact on the key indicators of animal well-being:

  • USDA-ARS Livestock Issues Research Unit
  • Colorado State University
  • Kansas State University
  • New Mexico State University
  • Oklahoma State University
  • Texas Tech University
  • University of Nebraska-Lincoln
  • West Texas A&M University

Findings: Zilmax has no impact on animal well-being

When used according to label directions along with good animal care practices, the results from the observations and additional studies all reaffirm Zilmax's safety and conclude that it has no negative impact on the well-being of cattle.1,10-20

Researchers also looked at a specific animal well-being question raised by the industry. The experts concluded it was a multi-factorial incident known as Fatigued Cattle Syndrome (FCS), which can be prevented by proper animal management protocols.29

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Answers About Zilmax®

Zilmax has a withdrawal period 3 days prior to slaughter. Not for use in animals intended for breeding. Do not allow horses or other equines access to feed containing zilpaterol. Do not use in veal calves. Not to be fed to cattle in excess of 90 mg zilpaterol/head/day in complete feed. If pen consumption of complete feed exceeds 26.5 lb/head/day (90% dry matter basis), zilpaterol should not be fed in complete feed.

For complete safety information, please refer to the product label.