Depends on Sport: some sports ban different substances than others. Best place to look is at the websites o regulatory commissions such as WADA, USADA, USOC, NCAA, NFL, etc... Look for the "Banned Substance List". They are extensive and always changing. They usually can't keep up with the rate at which new substances are developing. It's a much larger list than can be said in 400 characters :)
Answered 4/13/2015
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