Dietary Supplements as a Major Cause of Anti-doping Rule Violations by Fredrik Lauritzen

“…Stimulants were the most prevalent substance group linked to supplements (n = 24), of which methylhexanamine was associated with 16 cases. High risk products were predominantly multi-ingredient pre-workout supplements (n = 20) and fat-burning products (n = 4). …”
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Potential health risks of foodborne performance-enhancing drugs in competitive sports by Maoqiong Wei, Ju'an Wang

“…Performance-enhancing drugs (PEDs) that are often added to synthetic supplements include creatine, traditional Chinese herbs, 1, 3-dimethylbutylamine (DMAA), sibutramine, ephedrine, and methylhexanamine. Targeted anti-doping training should be provided to athletes. …”
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