Food Safety Report: Costco Wholesale, Taschereau Boulevard, Brossard, QC, Canada 11 months ago • details Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Headache Suspected source: frozen pizza Onset: Right away Duration: 12 to 24 hours Sick: A loved one Additional information: the frozen pizza gave me horrible nausea and diarrhea for 2 days