A medication information repository and analysis system receives prescription information indicating medication prescriptions filled for the patient, analyzes the prescription information to determine an estimate of recent medication consumption by the patient, and stores a medication advisory message indicating prescription and recent medication consumption information for the patient in association with a personal identifier assigned to the patient. A medication advisory delivery system automatically delivers the medication advisory message in response to a medication advisory request that is received in accordance with medication advisory contact information and indicates the personal identification number assigned to the patient. An emergency medical technician may issue the medication advisory request after reading a medication advisory tag carried by a patient identifying the medication advisory contact information and the personal identifier assigned to the patient.