Heavy drinking, defined as the consumption of five or more doses of alcoholic beverages on a single occasion by men or four for women at least once in the last 2 weeks (Macinko et al. 2015), has become a major health issue in Brazil. In primary care settings, screening and brief intervention reduces heavy drinking (Kaner et al. 2018; Soares and Vargas 2019), yet it is rarely used in Brazil (Macinko et al. 2015). This protocol describes a screening and brief intervention implementation feasibility study to be implemented in Rio de Janeiro's Family Health Strategy primary care units. [ABSTRACT FROM AUTHOR]