Abstract: A device is described whereby persons required to take one or more doses of a plurality of medicines, over a span of hours and days can keep track of times said dosages should be taken, by means of an apparatus which comprises a thin sheet member having an array of apertures arranged in a multiplicity of mutually perpendicular rows, a plurality of removable color-coded pegs conveniently rounded to be rotatably secured in the holes, arrangement of said holes being indicative of the time of day on one axis and indicative of the medicine to be taken and the dosage on the second axis. Thus, where a person is required, for reasons of health, to take a variety of medicines at differing times of the day or night, then it is a simple matter to program the subject invention whereby the medicine, the dosage and the time are readily and conveniently known.