On May 1, 2024, the National Anti-Doping Agency conducted a training seminar for athletes and athletes' assistant staff from the National Judo Sports Federation. The most relevant aspects in anti-doping, the roles and responsibilities of coaches, violations of anti-doping regulations, the list of prohibited substances and methods were presented, explaining the negative effects of doping substances and the sanctions applied to athletes. In addition to these, the risks of administering drugs and food supplements were highlighted, as well as the danger of unintentionally violating anti-doping regulations through the lens of the principle of strict responsibility. At the same time, a broad description of the doping control procedure, the localization program and the exemptions for therapeutic use was presented. At the end, the participants received informative materials. In conclusion, we can state that trained athletes strongly support the fight against doping and the promotion of clean sport.