Since 2004, and as mandated by World Anti-Doping Code, WADA has published an annual List of Prohibited Substances and Methods (List).The List, which forms one of the five International Standards, identifies the substances and methods prohibited in- and out-of-competition, and in particular sports. The substances and methods on the List are classified by different categories (e.g., steroids, stimulants, gene doping).
The list has been updated as of January 2016 and you can find it here.