> I'm intrigued to learn that Flex-free and Adequan do not test
    > and can be used in AERC competition.
    > What about other supplements that supposedly benefit a horse's
    > performance?  DMG?  MSM?  continous wormers?  others?  Do they
    > test?  Are they natural?  Or by the letter of the law are they
    > prohibited, whether they test or not?
    > I think there is still quite a bit of confusion about the AERC
    > drug policy.
    > ks
To my knowlege, DMG and MSM are also not 'drugs' - nor are the
prohibited by AERC.
steph