Food Safety Report: Starbucks, Greenback Lane, Citrus Heights, CA, USA 6 days ago • details 56 Suspected food poisoning. Symptoms: Diarrhea, Stomach Pain Suspected source: Starbucks Sandwiches Onset: 4 to 12 hours Duration: 12 to 24 hours Sick: Me Additional information: I ate here for breakfast 2 days in a row now.