Olivier Rabin, science director of the World Anti-Doping Agency (WADA), advocated more stringent regulation of dietary supplement manufacturers during a presentation at the 13th Annual Oxford Interna- tional Conference on the Science of Botanicals in mid-April 2015. WADA is an international non-governmental agency dedicated to fighting doping and works with Interpol and the World Customs Organization on investigations.

Rabin reportedly noted that dietary supplements are a major concern because they are heavily used by athletes seeking an edge and heavily cited as a reason that some athletes fail doping tests. Rabin acknowl- edged that there has been improvement in the dietary supplement market over the years and that the proportion of dietary supplements containing prohibited substances has dropped from about 15 to 22 percent to less than 1 percent. Rabin believes that there is a need for pre-market approval and strong legal and financial sanctions for unscru- pulous manufacturers. See NutraIngredients-USA, April 17, 2015.