Medication errors involving insulin are common, particularly in hospitals and at point-of-care transfers. Using a continuous improvement methodology, a multidisciplinary project team carried out three “plan-do-study-act" cycles to introduce locally tailored insulin discharge prescribing guidance. Adherence to the guidelines improved from an average of 50% to 99% after introduction of a poster and then checklist forms of the guidelines. This small, qualitative study in one hospital diabetes ward suggests that small iterative changes can improve insulin discharge prescription quality. A PSNet primer expands on the topic of medication reconciliation.