Food Safety Report: White Cake, Walmart Supercenter, Walzem Road, San Antonio, TX, USA 1 year ago • details 13 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps Suspected source: Slice of white cake from Walmart Onset: Less than 4 hours Duration: other: Still on the toilet Sick: Me… See more