A medication vending device is provided that includes an input interface configured to receive a signal outputted by a medical diagnostics device which indicates a parameter of the patient's body, and a memory that stores a dosing schedule for medication loaded into the device. The medication vending device generates an electronic message whenever a vending event occurs. The dosing schedule is compared with the vending events, and a signal is outputted indicating when the medication is being properly vended in accordance with the dosing schedule, thereby indicating that the patient is adhering to the dosing schedule. An alert signal is generated when the patient is adhering to the dosing schedule, but the parameter is abnormal for the patient.