DOI 10.1007/s00394-014-0827-4 SUPPLEMENT A quality dietary supplement: before you start

© The Author(s) 2015. This article is published with open access at Springerlink.com attributes of these products. Conversely, strict adherence to regulatory guidelines could result in safer dietary supple-ments and fewer adverse reactions requiring medical atten-tion. If new regulations or stricter interpretation/application of existing regulations result in certain dietary supplements being taken off the market, will continued demand cre-ate a completely unregulated, underground economy that will create unforeseen problems? More research should be supported by government agencies to determine the effec-tiveness of dietary supplements, nutritional products and complementary medicine in reducing personal and societal medical costs and further contribution to the overall health of the population. Since the completion of the good manufacturing practice