Food Safety Report: Tim Hortons, Symons Valley Parkway Northwest, Evanston, Calgary, AB, Canada 1 year ago • details 7 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Fever, Stomach Pain, Cramps, Chills, Headache Suspected source: Muffin Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me