It was interesting to read about the varied responses to Ultracet. I have severe, chronic pain due to arthritis in both knees. Walking had become very painful and difficult. Not being able to tolerate the itching and headaches from codeine, I found Ultracet to be extremely effective. I can go up and down stairs with much less pain. I've taken it for two months and have not experienced any impairment in mood or judgement. However, some of the reports on this website concern me and I will consult my doctor again.