Food Safety Report: Olive Garden Italian Restaurant, Interstate 35, New Braunfels, TX, USA 1 year ago • details 56 Suspected food poisoning. Symptoms: Diarrhea, Nausea, Vomiting, Stomach Pain, Cramps, Chills, Headache Suspected source: olive garden Onset: 12 to 24 hours Duration: 12 to 24 hours Sick: 2 people