Food Safety Report: Potbelly, South Colorado Boulevard, Denver, CO, USA 8 months ago • details 27 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting Suspected source: Roast beef Onset: Less than 4 hours Duration: 12 to 24 hours Sick: Me Additional information: This happened on Superbowl Sunday.… See more