My husband has been taking vicodin for 3 years he had spinal stenosis which was fixed by putting titanium plates and screw in his spine from c-3 thru c-7 vertabre but he still has pain and he has a severe addiction to vicodin he weighs about 200lbs and some times he will take as many as 25 vicodin a day which are 7. 5/325 mg what is this doing to his body other than what I can see? He also takes sertraline and gabapentin and alprasalam help