Drug testing and MD6

i remember reading in a couple of posts that md6 contains something that some powerlifting organizations may consider as “cheating” does anyone know which ingrediant it is in the stuff that is “illegal” and how long do you need to be off of the stuff before a drug test in order to test clean?

anyone that knows the answer to this please reply. thank you

I know some organizations like the NCAA ban ephedrine and norephedrine so that may be the drug that will show up. Also high amounts of caffeine are also banned by some organizations like the Olympic organization.