Is it possible to regulate a pharmaceutical product that does not contain any active principle? Believe it or not, it is. National laws and European Directives establish the conditions — with many details — for the commercialization of homeopathic products. Directive 92/73/CEE integrated by Directive 2001/83/EC form the basis for national regulations where homeopathic products are considered part of the pharmaceutical legislation but may be approved with far less documentation.