U.S. audiences only.
Is the beef from cattle fed this supplement safe to eat?

Yes. It’s safe to eat the beef from cattle fed Zilmax. More than 30 years of research and development, as well as rigorous testing, support the safety of Zilmax. The FDA reviewed this research and concluded that beef from cattle fed Zilmax is safe.1

The FDA approval consisted of a thorough human food safety review, including toxicology and other studies, which demonstrated the safety of Zilmax, when used according to label directions along with good animal care practices. The safety of Zilmax has been well documented by independent third-party scientists around the world.

How can we be confident Zilmax is safe?

"One of the things that makes Zilmax safe is that it is metabolized by the animal's system. As a result, it clears from the animal quickly and doesn't accumulate in the muscle or fat." Bradley J. Johnson, Ph.D.,
Gordon W. Davis Regent’s Chair in
Meat and Muscle Biology, Texas Tech University


Read more about Food Safety
Supplement Safe To Eat

Return to
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.