The study show that the social climate around cannabis has moved toward a more permissive one, both in terms of recreational and medical use. Since the beginning of the 2000s, cannabis has also got complements in form of synthetic cannabinoids wich are structurally similar to the intoxicating cannabinoids that occurs naturally in cannabis. Several of the cannabinoids are legitimate wich make them easily accessible. Young people quickly captures and re-evaluates information and the aim of this study was to explore the attitudes to cannabis and synthetic cannabinoids among young people between 15-19 years. We has studied the sources of information that might influence their attitudes. The study has an quantitative approach and the empirical material was gathered through questionnaires which were distributed in classes at secondary schools and upper secondary schools. The results of this study show that adolescents who had not received any information about cannabis or synthetic cannabinoids doesn’t think they can take a stand regarding the hazardousness of the drug. We have found connections between their attitudes and the amount of information they received. Therefore it is important that young people receive information about drugs in order to form an opinion.