"i have had 24/7 severe headaches for 7 1/2 years due to a condition i have called occipital nueralgia.  i have tried every kind of pain medicine and preventative medicine out there, nothing worked!  i am on 40mg of opana 3x/day, and it is wonderful, i can function and work and play with my kids and be out in the sun for the first time in 7 yrs, this totally keeps my pain under control.  i love it.  i highly suggest that any one with chronic severe pain try it.  it works"