"i have been on opana er 15mgs for 3yrs now. was diagnosed with a herniated disc with an annular fissure at l3,4 and 5. also have degenerative disc disorder, spinal stenosis, plus more back problems and diagnosed with fibromyalgia. all i can say is the opana er crush resistant are junk. i was prescribed oxymorphone hydrochloride er  15mg a green pill, the pill form was a miracle for me i could get up and go to work 12-16hrs and they last with hardly taking a percocet for breakthrough pain had my life back with the generic. the name brand opana er are junk. i always have an empty stomach when i take and not even an hr later my stomach is upset and always have diarrhea."