The ECDD is the Expert Committee on Drug Dependence. The Committee consists of an independent group of experts in the field of drugs and medicines. The ECDD first met in 1949, and since then has reviewed over 450 substances up to the present day. A proportion of the 450 substances are around 100 substances considered between 2014-2023 which are of current public health relevance. The recommendations of the Expert Committee are based on the best available scientific, medical and public health evidence and must comply with the criteria established in the conventions. Further information about how we work, what we do, who we are, and the substance control ecosystem are available on the left-hand side of this page.