Staff in 24/7 group housing services for adults with intellectual disability are responsible for ensuring safe medication management processes and supporting the residents in their health-related issues. Ten interviewed nurses reported several challenges in the medication management process emerging at the staff level, the level of the group home, and the level of the social and healthcare system, and were often related to issues in communication and responsibility. They reported a variety of complex tasks in the medication management process, for which they need a multiple skill set. They also act as healthcare advocates for residents, but healthcare services do not always match residents' needs. Training for social and healthcare professionals, access to healthcare services and the collaboration of social and healthcare services should be improved to provide the people with intellectual disability the best possible pharmacotherapy and healthcare.