FDA 483 - Siemers Holsteins, Inc. - August 13, 2025

An FDA inspection of Siemers Holstein Farms, Inc. in Newton, WI on August 13, 2025, revealed a significant food safety violation. The firm offered a dairy cow for interstate commerce that contained a violative drug residue of sulfadimethoxine in its liver, exceeding established tolerance levels. This indicates a failure to ensure food-producing animals are free from unsafe drug concentrations prior to entering the food supply.