In every culture, man has used drugs to dispel anxiety, stimulate productivity, and to increase the feelings of joy and satisfaction. Drugs have also had an undeniable influence on art and culture. These substances become referred to as ‘drugs of abuse’ if their repeated consumption is triggered or induced by psychological or physical compulsion, often leading to conflict with society, either due to neglect of family or social duties, and also to criminal activities in order to obtain the materials. Drug abuse particularly affects young people and has become one of the most important and widely discussed issues in society. It is therefore an important task in medical science to find answers to how drugs exert their effect and what leads to addiction and permanent consumption.