"i had a fusion 30 years ago. this has lead to degenerative disc disease. i am only 52 and have the spine of a 100 year old person. i tried every pain reliever in the book over 9 years. i was recently put on the methadone and it has saved my life. i can now walk, stand, sit through a movie with no pain and no side effects. it is a god send for chronic pain."