Abstract: In a Selected issue on ‘Cocaine and crack cocaine: a growing public health issue’ the EMCDDA shows that, in some European countries, there has been a marked increase in recent years in the use of cocaine, in treatment demands for cocaine problems and in seizures of the drug. The potential for cocaine use to have a major impact on public health is examined and special attention given to the health consequences of cocaine use, which are often not well recognised in existing reporting systems. Also examined are the challenges to providing effective treatment for cocaine and crack cocaine dependence.