"my doctor currently has me on opana er 5mg every 12 hours and let me tell you it&#039;s a god send. i was taking 4 or 7 norco 10mg a day every 4 hours because i was always in so much pain now since my doctor switched me from norco to opana er the results have been amazing i no longer have pain constantly and whenever i walk a long way i still sometimes have pain but on a scale of 1-10 the pain is only a 2. i&#039;m so thankful for this medicine because now i&#039;m no longer in pain and another good thing about this medication is i don&#039;t have any side effects nor do i get that fuzzy feeling that other opioids give you . i highly recommend anyone who has chronic severe lower back pain to talk with your doctor about switching to opana er."