Ive been taking Tramadol for nearly three years this drug was given to me for my illness of endometriosis, this was at first now i have to take it because i have a slipped disk in my back, i have cut down from eight 50g to four a day but i am finding it very hard to come of the pills i have severe panic attacks and really bad crushing pains in my kidneys it really hurts i know this is not a kidney of water infection as i have these pains every time i stop taking them also i get the shakes and feel very sick can any one give me some advice ?