The World Anti-Doping Code Prohibited List
This is the list of the substances and methods that are prohibited in rugby, and all sports. You must not use anything on the List if you want to avoid an Anti-Doping Rule Violation (ADRV) and remain a clean player. The list is usually updated annually on 1st January, and sometimes changes are made during the year.
The Prohibited List can be accessed on the WADA website.