Shoulder arthroscopy and Rotator Cuff repair too. Given Endone on discharge- also 1-2 tablets 6 hourly. Also great pain relief on 1st day. From 2nd day had nausea, vomiting and diahorrea. Headaches and high blood pressure. As I am allergic to codeine based products, I believed I was allergic to all opiate based products. Could this be the case or just coincidence?