In one embodiment, the invention comprises a tray insert for a medication dispenser, the dispenser permitting access to a medication dose after a minimum dosing interval has elapsed since presentation of an immediately previous dose. The dispenser comprises a dispenser cover having an opening through which a patient accesses the medication dose presented through the opening and a carousel for receiving the tray insert. The tray insert comprises a substrate, a plurality of medication retention areas in the substrate each for holding at least one medication dose, each medication retention area received within a depression of the carousel and a cover removably affixed to an upper surface of the substrate for retaining the medication doses in the medication retention areas prior to use, wherein after the tray insert is mated with the carousel the cover.