Motivational interviewing (MI), developed in the 1980s, demonstrated efficacy in helping patients to change their health behavior, and more recently in supporting patient therapeutic adherence. However, the training in patient therapeutic adherence support is poor and unequally distributed within the initial and continuing training of health professionals. To cope, an interprofessional continuing training was designed by health professionals and researchers, aiming at acquiring fundamental knowledge in therapeutic adherence and MI skills. The results of the first training session should encourage health professionals to train, and decision-makers to promote wider dissemination of this training.