Food Safety Report: McDonald's, Marketplace Boulevard, Hamilton Township, NJ, USA 2 years ago • details 19 Comments Comment Suspected food poisoning. Symptoms: Diarrhea, Stomach Pain, Cramps, Chills Suspected source: Shamrock shake Onset: 4 to 12 hours Duration: Less than 4 hours Sick: Me Additional information: Constant bright green diarrhea bc of bad shamrock shake