Dear Ever,

Maybe you can use the following publications…

Avelar-Escobar G, Méndez-Navarro J, Ortiz-Olvera NX, Castellanos G, Ramos R, Gallardo-Cabrera VE, Vargas-Alemán Jde J, Díaz de León O, Rodríguez EV, Dehesa-Violante M. Hepatotoxicity associated with dietary energy supplements: use and abuse by young athletes. Ann Hepatol. 2012;11(4):564-9.

“It was difficult to generalize regarding dietary supplement use by athletes because of the lack of homogeneity among studies. Nonetheless, the data suggested that elite athletes used dietary supplements far more than their non-elite counterparts…”

Knapik JJ, Steelman RA, Hoedebecke SS, Austin KG, Farina EK, Lieberman HR. Prevalence of Dietary Supplement Use by Athletes: Systematic Review and Meta-Analysis. Sports Med. 2016;46(1):103-23.

Best wishes from Germany

Martin

Thank you so much.

Dietary supplements guidelines is given by USDHEA not FDA, WHO,   it's not for preventing and  curing,