Doping in sport has been a phenomenon known for centuries, despite the fact that already in ancient Greece any cheating at the Olympics was severely punished. Today's medicine, catering to the needs of people with various medical conditions, subjects athletes to various ideas to improve their performance, endurance and strength on their way to victory. The World Anti-Doping Agency is the author of the regulations that clearly define which pharmacological substances, are prohibited in order to keep sports competition 'clean'.