I use supplements. Probiotics, joint compound,
(it's hard to find one without MSM and Yucca, but they are out there),
anti-ulcer, hoof builder.
BUT... If somebody came to me and offered to "fix"
me up a batch of supplement, and it went " Well we have to get a compliant Vet
to prescribe it for us, 'cause it's illegal in the USA, and then we get a
pharmacy to cook up a batch for us, then we inject it before a
ride/race/match...." Well my hackles will go up. Then when the
re-assurances go " Hey buddy this is good stuff, all the top cockfighting
outfits swear by it. What could go wrong?".. By then my response, as I
head out the door would be something like, "Is this the same stuff Barry Bonds
was using?".
Regardless if the problem came because of a "bad
batch", it sounds like these folks were still running pretty close to the edge
legally and morally.