Anxiety and Panic Attacks after Codeine Withdrawal by Katie18Hi, I'm new here. I've just completed a medically-supervised detox programme to get off codeine. I was taking huge amounts (up to 30-40 tablets a day) and had been taking them on and off for about ten years. It was only fairly recently that I started taking large amounts - to start with, I only took the prescribed dose from my doctor. I've managed to successfully quit and although the physical withdrawal symptoms were unpleasant, I got through it, with the help of Subutex. However, the mental withdrawal symptoms are nothing short of horrific and don't seem to be going away. Severe depression, severe anxiety, panic attacks, feeling frightened nearly all the time and a feeling of impending doom that I can't seem to control. Is this normal? Has anyone else been in this situation before? I can't help thinking that I felt better when I was on codeine, but I couldn't continue taking such huge amounts of it. I just want to feel better psychologically and I don't know how long these horrible side-effects will last.