I am on constant pain meds and spent the last year on Avinza. All of the sudden, My insurance wouln't fill the script and I was left without meds for almost a week. I almost died. Now they have decided to give me Kadian instead of Avinza and I have to take it twice a day instead of once and it costs more. I don't understand the difference between the two except the price. Can anyone help?:(

Tracy Cummins