The present invention relates to a selection system, a dispensing system and a process using a matrix enabling a physician to select one of the plurality of one-a-day combinatory pills. The system and method uses matrices of a plurality of one-a-day pill formulations (a total of 144-177 combinatory pill formulas, or representative indicia thereof). The matrices enable the physician to pick one selected combinatory pill from the 177 formulations, adjust (titrate) dosages over time and use the matrices as an educational tool to motivate the patient. The use of a single daily pill with various commonly prescribed dosages of preventive medications greatly enhances compliance. The information processing system employs a computer or other electronic device or the physician may use printed substrates showing the matrices. The dispensing system includes a dispensing interface.