Food Safety Report: Olive Garden Italian Restaurant, Westown Parkway, West Des Moines, IA, USA 1 year ago • details 47 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Nausea, Stomach Pain, Cramps, Headache Suspected source: i honestly do not know but i had some microwaved shrimp alfredo and i think thats it Onset: Less than 4 hours Duration: Several days Sick: Me