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“The use of cheaper materials in drug and supplement products came to light with melamine used to artificially boost apparent protein content in pet food and infant formula products in China. In 2009, the Council for Responsible Nutrition released a statement on the problem of economically-motivated adulteration in the supplement industry. While the new Good Manufacturing Practice guidelines for the industry were intended to address this issue, the current USDA analytical paper tells us that more stringent enforcement of the rules is necessary.” David J Kroll, Science Based Medicine (2nd September 2011)