I am allergic to codeine. I itch so bad that I scratch until I bleed. I took one dose of cough syrup and lost a whole weekend. I do not remember any of it. My mother took my car keys and wouldn't let me have them back until I was normal. I accused her of holding me prisoner, she was. It was for my own good. It is nice to have other things now that I can take for extreme pain. At that time, In the mid-70's, that was about it.