Medication information management (MIM) is a crucial activity for good quality of medication, but unfortunately not without problems. In order to improve medication information management the core activity of medication as a cooperative activity is to be studied as a whole, and the multiprofessional viewpoint for the improvement needs must be captured. In this paper we present our approach to gain such shared understanding, based on our regional development project experiences in Northern Savonia, Finland. The central features of the approach include thematic interviews supported by activity-driven models and a workshop with professionally mixed groups. Participants agreed strongly on the usefulness of the approach.