FDA SAFETY ALERT: Altrenogest

FDA SAFETY ALERT: Altrenogest

Equine products:  Regumate, Ovamed and Altren

Swine products: Matrix, Chronomate and Swinemate

The U.S. Food and Drug Administration is alerting veterinary medical professionals, as well as those who work with horses and pigs, that a synthetic progesterone (hormone) product commonly used in these animals may cause reproductive system disorders and other adverse effects in people who become exposed to the drug. The FDA is providing this alert because of the nature of the adverse events, some of which have occurred in teenage girls.

Most people became exposed when the drug contacted their skin. Some of these exposures have occurred when people, who did not administer the drug, touched product residue on barn surfaces, equipment, or treated animals.