Ractopamine hydrochloride is fed to cows, pigs, and turkeys in the United States. It is currently banned in the European Union, China, and Taiwan (among others) and approved for use as animal feed in the United States, Canada, and Mexico (among others). It is sold under the brand names Paylean (for pigs) and Optaflexx (for cows). For those looking to consume meat which wasn’t raised on growth hormones, antibiotics, and other chemicals will probably want to avoid ractopamine fed animals as well.