 The purpose of this study is to observe and evaluate the use of a relapse prevention program over time among internet help-seekers. Participants are recruited via a nationally known portal for assisting anonymous individuals with changing their problematic alcohol use in a healthier direction alkoholhjalpen.se. The intervention offered lasts 10 weeks and includes 7 relapse prevention modules, with a three-week pause between the 6th and 7th modules. Baseline data are collected regarding substance use and psychosocial health and follow-up takes place 10 weeks after recruitment. The study is observational. 