Abstract: An add-on timer for a medicine container is provided having a base plate affixed to the top of an existing lid, a housing overlaying and coupled to the base plate, and a timing unit within the housing. The housing is displaceable relative to the base plate by a person depressing or twisting the housing, which actuates a switch and resets the timing unit. A display indicates the elapsed time since the container was last accessed, to assist a patient in following dosage instructions.

Abstract: An improved device for timely medication administration that attaches to any original container cap and that measures and displays elapsed time in response to opening or closing of said original container cap is disclosed. Physical, chemical and labeled characteristics of the original medication vessel are thus preserved as dispensed. This device includes a timing unit, a compression reset switch and a thermoplastic housing for the above with a resilient, flexible, circumferential wall that permits operation of the enclosed compression reset switch. The thermoplastic housing also features a rigid lower lip that allows adhesive attachment to the original lid.