High Quality Content by WIKIPEDIA articles! The list of drugs banned from the Olympics is determined by the World Anti-Doping Agency, established in 1999 to deal with the increasing problem of doping in the sports world. The banned substances and techniques fall into the following categories: androgens, blood doping, peptide hormones, stimulants, diuretics, narcotics, and cannabinoids. The use of alcohol (ethanol) is banned in selected sports only during actual competition.