I think I am allergic to codeine ( double vision, excessive dizziness, hives, sick to my stomach which is in my records) I was prescribed Percocet yesterday for a procedure, 1 hour after taking it, I was seated on the exam table waiting for the dr. when all of a sudden I felt very sick, started sweating and dizzy then I passed out. (face first) When they woke me up I started vomiting. I spent the rest of the day in the er. My blood sugar was perfect, all tests came back healthy and fine. I was so amazingly tired for the rest of the day what are normal side effects and do you think I had an allergic reaction and should the dr. have given me something else knowing that I could not take codeine?