Food Safety Report: Smoothie King, West Chester Pike, Havertown, PA, USA 1 year ago • details 31 Suspected food poisoning. Symptoms: Nausea, Headache Suspected source: Smoothie king Onset: Less than 4 hours Duration: 4 to 12 hours Sick: Me Additional information: Chocolate banana vegan smoothie- severe nausea and diarrhea