In the next two, athletes can consult the  WADA’s prohibited list of substances. First one is the 2017 list:

https://www.ifbb.com/wp-content/uploads/2017/10/2016-09-29_-_wada_prohibited_list_2017_eng_final.pdf

The second one is 2018 list (which will come into force on january 2018).

https://www.ifbb.com/wp-content/uploads/2017/10/prohibited_list_2018_en.pdf