The National Prescription Drug Utilization Information System (NPDUIS) Database includes claims accepted by public drug programs, either for reimbursement or toward a deductible. Claims are included regardless of whether or not the patient actually used the drugs.
The NPDUIS Database does not include information regarding
–Prescriptions that were written but never dispensed
–Prescriptions that were dispensed but for which the associated drug costs were not submitted to or not accepted by the public drug programs
–Diagnoses or conditions for which prescriptions were written
The NPDUIS Database contains claims data from public drug programs in British Columbia, Alberta, Saskatchewan, Manitoba, Ontario, New Brunswick, Nova Scotia, Prince Edward Island, Newfoundland and Labrador and Yukon. The First Nations and Inuit Health Branch (FNIHB), a federal drug program, also submits data, which comes from all Canadian provinces and territories (including those not listed above).