DOCUMENT HERE
The FDA has linked ractopamine to nearly a quarter-million reported adverse events in pigs (more than half of those pigs were sickened or killed) ā more than any other animal drug. These pigs became lame or unable to stand, started trembling, or suffered a host of other ailments.
http://articles.mercola.com/sites/articles/archive/2013/12/24/ractopamine-beta-agonist-drug.aspx
http://www.livescience.com/47032-time-for-us-to-ban-ractopamine.html