Although medication therapy is becoming increasingly complex, risky, and costly, the medication supply process in hospitals remains entrenched in outdated structures and follows traditional processes. Consequently, the quality of outcomes is poor: after infection risks, medication errors pose the greatest risk to patients in hospitals. The data on patients harmed by avoidable medication errors and high follow-up costs is overwhelming. Despite this being known for years, little has been done so far. However, the situation will need to change soon. Structural, process, and outcome quality are at the top of the current political agenda, and the medication supply process is an important cross-sectional process with a significant impact on outcome quality. The closed medication process.