A dosage dispensing cap system is configured to release a fixed amount of medication from a container as a result of a single actuation by a user. A first cap element of the system may have a first aperture and be adapted to be attached to the container, which is configured to house a multiplicity of pills of a generally uniform size, or liquid medication of a particular volume. A second cap element may be flexible, have a flange member extending generally radially outward from a diaphragm member and be disposed between the first cap element and the container. The diaphragm member may have a mouth portion, a throat portion and a cavity generally disposed therebetween. The cavity may be generally large enough to contain a fixed number of pills or a dose volume of liquid. By way of a simple actuation, the mouth portion opens and the throat portion closes, thereby allowing the cap system to release a discrete number of pills or a dose volume of liquid medication.