Extreme caution is recommended regarding supplement use. A number of positive tests have been attributed to the misuse of supplements, poor labelling or contamination of dietary supplements. 

The use of supplements by athletes is a concern because in many countries the manufacturing and labelling of supplements may not follow strict rules, which may lead to a supplement containing an undeclared substance that is prohibited under Antidoping regulations. Pleading that a poorly labelled dietary supplement was taken is not an adequate defence in a doping hearing. 

More about supplements and doping in freediving you can hear live  

23rd of March @10:00 UTC 

from Dr. Marija Andjelkovic and Dr. Nenad Dikic, experts of the CLEAN GAME and CENTER FOR SPORTS NUTRITION AND SUPPLEMENTATION, with expertise in clinical pharmacology, sports nutrition, supplementation, and anti-doping. 

Link for the seminar you can find here

AIDA Anti-doping page: AIDA | AIDA Anti-doping (aidainternational.org)