Food Safety Report: Quaker Oats, Denver, CO, USA 6 months ago • details 1.0K Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills Suspected source: Quaker Oats Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me