Question for Sighthound (Sorry, not Derby-related)

[magicnight]

Sight - Can you offer anything about this compound (banned in the US) that was f#&%ed up by this pharmacy, killing all those polo ponies? Is this present at all in racing and is it being tested for? Thanks.

http://www.nytimes.com/2009/04/24/sports/othersports/24polo.html?_r=1