Sundström C, et al. - The efficacy of a therapist-guided high-intensity internet intervention vs an unguided low-intensity internet intervention among individuals with alcohol use disorder was investigated. Researchers performed a three-group randomized controlled trial including 166 on-line self-referred adults (49% males) with a score of 14 (females)/16 (males) or more on the Alcohol Use Disorders Identification Test, a preceding week alcohol consumption of 11 (females)/14 (males) or more standard drinks and an alcohol use disorder according to a diagnostic interview. Modules based on relapse prevention were incorporated in both the high- (n = 72) and low-intensity internet interventions (n = 71). Follow-up assessments were performed posttreatment (12 weeks) and 6 months postrandomization (primary end-point). Controls were on a waiting-list (n = 23); only until the posttreatment follow-up, controls were followed. Largely alcohol use disorders were in severe category (74.7%), with the preponderance of participants having had alcohol problems for more than 5 years. In this work, a therapist-guided high-intensity internet intervention and an unguided low-intensity internet intervention led to no different outcomes regarding reduction in alcohol consumption at a 6-month follow-up among individuals with an alcohol use disorder.