Racing commissioners in Louisiana took penalties for zilpaterol overages one step farther in a lengthy meeting April 26, extending the already-significant suspensions handed out by stewards a few weeks earlier.

The commission considered eight positives from trainer Rosendo Valdez, four from Lanny Keith, four from Manuel Pizana, three from Manuel Macias, and two from Fernando Lopez. The overages were part of a flood of recent zilpaterol positives in the state.

Zilpaterol is not approved by the Food and Drug Administration (FDA) for use in horses. Instead, it is a drug approved for use in beef cattle to promote weight gain and lean muscle mass. It’s commonly administered as a feed-through product when given to cows.