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Reporting Side Effects

Important Note: Patients should always ask their doctors for medical advice about adverse events.

To report an adverse event (or suspected side-effect) experienced with a Pfizer medication (prescription, non-prescription or a vaccine) please contact us at 1 866 723-7111 or by fax at 1 855 242-5652. Reports can be made directly to Health Canada as well through the Canada Vigilance Program at 1 866 234-2345.

Healthcare professionals with additional questions about Pfizer products can visit pfizermedinfo.ca.