Office for the suppression of drug abuse of the Government of the Republic of Croatia defines drugs as any substance of natural or artificial origin, including psychotropic substances, included in the list of drugs and psychodelic substances, and defines addiction as a state of irresistible psychological or physical need for drug use. Taking drugs can lead to lifestyle changes so that drug use becomes something that revolves around an individual's life and leads to various physiological, social and psychological problems. Drug abuse is on the rise worldwide and is becoming a global problem, regardless of a country's level of development. The aim of this study was to examine knowledge, attitudes and opinions on drugs and people’s own experiences related to drug consumption. A total of 318 people participated in the survey, of which 171 (53.77%) subjects were female and the remaining 147 (46.23%) subjects were male. This survey was mostly conducted in the range of ages 19 to 25. Research has shown that drugs are a growing health problem and more and more young people are being affected by the influence of society, entertainment, curiosity, all kinds of problems to reach for drugs that are quickly and easily available. To many respondents, someone was offering them drugs or persuaded them to try it. Of those who tried, 174 (97.21%) consumed marijuana, so it is not surprising that 191 subjects (60.06%) support marijuana legalization. Most of them feel that not all drugs are equally affecting health and that our population is not sufficiently informed about the impact of drugs on the body.