Avinza, Kadian, MS Contin are all brand names for Morphine Sulfate ER (extended release). It is a slow release morphine without added Tylenol like Vicodin has.
I have taken 60 mg twice a day for a long time. I started out 4 years ago half that dose. I, personally, can tell a big difference in when I take them vs. when I don't. I don't have the side effects from these vs. taking pain meRAB for break through pain. As with any medication, everyone tolerates them differently. I would have to say to give this a try for pain though!