Food Safety Report: Costco Wholesale, 1755 Hacienda Drive, Vista, CA, USA 2 years ago • details 32 Suspected food poisoning. Symptoms: Diarrhea,Nausea,Vomiting,Stomach Pain,Cramps,Chills,Headache Suspected source: Nature Valley peanut butter dark chocolate protein bar Onset: 1 hour Duration: 1 day+ Additional information: no