Food Safety Report: Gyubee Japanese Grill (Waterloo), King Street North, Waterloo, ON, Canada 1 year ago • details 22 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps, Headache Suspected source: Gyubee Onset: 12 to 24 hours Duration: 12 to 24 hours Sick: Me