Food Safety Report: Walmart Supercenter, Valley Springs Parkway, Riverside, CA, USA 2 years ago • details 53 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills Suspected source: Not sure Onset: 4 to 12 hours Duration: 4 to 12 hours Sick: Me