Ractopamine: The Meat Additive on Your Plate That's Banned Almost Everywhere But America | Alternet
"Have you ever heard of ractopamine? Neither have most US food consumers though it is used in 80 percent of US pig and cattle operations. The asthma drug-like growth additive, called a beta-agonist, has enjoyed stealth use in the US food supply for a decade despite being widely banned overseas. It is marketed as Paylean for pigs, Optaflexx for cattle and Topmax for turkeys."