I have severe chronic pain due to a. totally messed up back. Even with 50 mcg, 3-day Fentenyl patch, and 60 to 80 mg Oxycodone, this doesn't completely handle the pain. On a good day, the pain might be a 3 or 4. On a bad day, it's more like 8. It's mainly from Osteoarthritis in my Lumbar spine, but I also have arthritis in my hands, feet,, neck, knees, shoulders, etc., but also fron Crohn' s and Fibromyalgia.