A medication dispenser provides automation to the steps of locating and acquiring unit-based doses of certain medications to be administered to a patient. The dispenser includes a frame and one or more cartridges that may be mounted onto the frame. A set of slots sized for holding unit-based doses of medication extend through a body portion of the cartridge. A movement device is also positioned relative to the frame and is configured to induce movement of selected unit-based medication doses out of associated slots in the cartridge, so that the dispensed doses may be retrieved.