Despite a significant number of studies dealing with the theme of Parenthood, alcohol and drugs , the role of the paternal partner of consumer mothers has been neglected. The material presented in this article is taken from a Quebec qualitative study involving twenty fathers and twenty parturients with psychoactive substance abuse problems, and covers meetings with them at two different times. Our objective is to provide a sociodemographic profile of the parents, of maternal consumption in the pre-natal months, of previous and current paternal consumption levels, together with a number of key elements associated with the parental and conjugal experience of the fathers, both in the context of maternal consumption and of the parental consumer pattern.