Abstract

The use of dietary supplements is widespread. Concurrent adulteration of such products with undeclared pharmaceuticals has been reported quite often, especially for ‘the big three’, erectile dysfunction, weight-loss, and sports performance products. But still most consumers are unfamiliar with the problem, posing potentially serious health consequences. This article highlights the most common synthetic substances found as adulterants in dietary supplements, describes the analysis and the difficulties with the scientific assessment, using sexual enhancement products as an example.