This study examines how intellectual disability nurses employed in residential living services for persons with intellectual disabilities, in Norway, deal with medication management for these individuals. Using a qualitative study, a total of 18 intellectual disability nurses were interviewed as part of four focus groups. The results demonstrate six main challenges: First, Being alone with the responsibility of medication management - a challenge; Second, The need for further competence development; Third, Teaching and supervising unskilled colleagues in safe medication management; Fourth, Interpreting residents with little or only nonverbal communication; Fifth, The need to act as advocates when residents require hospitalization; Sixth, Deficient systems for medication management on several levels. The findings point to several major flaws in the system of medication management, which necessitates the need for highly qualified intellectual disability nurses. Managers must ensure that there is a secure system to mitigate errors and promote patient safety.