To determine the importance of the family support group in the treatment of codependency, based in reports made by relatives of a therapeutic community for drug addicts.Study conducted in a therapeutic community for alcohol and other drug addicts in a city in the southern extreme of Brazil. This is a qualitative, exploratory and descriptive research with eight drug addict relatives. Data collection occurred through semi-structured interviews and the use of a field diary, focusing on the family orientation group as a space for the health promotion of family members of psychoactive substance users.Through discursive analysis, it was found that the family orientation group constitutes an important tool of educational character, capable of responding to the family demands of chemical dependence, as well as rethinking and modifying attitudes and characteristic behaviors of co-dependence.The support group is fundamental as a care strategy for codependent families, and may act more effectively when professionals are trained to intervene in the phenomenon of codependency.