Objective: to analyze the effect of brief intervention on motivation to change alcohol consumption.Method: experimental, follow-up study, conducted with 43 participants in two Basic Health Units. The Alcohol Use Disorders Identification Test, the Change Readiness Ruler, and a socioeconomic questionnaire were applied.Results: The experimental group showed a median equal to 10 points (maintenance stage) at the beginning and after 30 days. In the segment, the median was equal to eight points (action stage). The control group had a median equal to eight points at the beginning and after 30 days (action stage). In the segment, median equal to seven points (planning stage). In the 30-day intermediate evaluation, it was noted that there was a statistical difference in motivation between the two groups (p=0.029).Conclusion: it was concluded that the Brief Intervention was effective in maintaining motivation in the stages of action and maintenance of change in the consumption of alcoholic drinks
