This follow-up study describes the former students' lasting impressions of a two-week interprofessional course on a training ward aimed at enhancing the understanding of the roles of other professions and the importance of communication for teamwork and for patient care as well as providing an opportunity for profession-specific training. A questionnaire with both closed and open-ended questions was sent to 633 former students two years after the course and 348 (55%) responded. The course was rated as very good and most of the former students had lasting and positive impressions. Ninety-two percent of respondents encouraged teamwork in their present work and 90% wanted to retain the course. The qualitative analysis of the open-ended questions resulted in five categories describing students' perceptions: professional role development, working in teams, tutoring, patient care and future aspects of the course and real world practice. Our results suggest that interprofessional training during undergraduate education provides lasting impressions that may promote teamwork in students' future occupational life.