I am also intolerant of many drugs, but everyone is different. At least your consultant is sending you for a preoperative assessment. I wouldn't ignore what any of the consultants tell you. Your doctors and you have a big decision to make. Make sure you know how they will monitor you and what they can do to alleviate side effects. You also have to decide how much you are willing to tolerate from the drugs in return for pain relief. If you fear a life threatening reaction, you need to thoroughly discuss this with your doctors. These are not easy decisions. My thoughts and prayers are with you.

Shay