Food Safety Report: Subway, 7400 San Pedro Avenue, San Antonio, TX, USA 1 year ago • details 60 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Chills Suspected source: Subway Onset: 4 to 12 hours Duration: 4 to 12 hours Additional information: I was starving and willing to… See more