Hi, I sure would appreciate an answer to my question, thank you..I have been taking morphine sulf 30 mg. 3x daily for an injury i got, when I was hit by a speeding car, while I was walking across the street, because of this, I have constant back and hip pain. my Dr. prescribed many different medications, had over a dozen injections. I did not like the way the fentynal patch, oxycontin made me feel..like I was a zombie, I am currently being prescribed morphine sulf 30mg 3x daily, I have been taking this medication, for about 3 years, since the accident, it is not as effective as it was, when I was first prescribed it. my Dr. currently would like to change my medication to opana 10mg every 12 hours, then after 1 week, I may take 1 tablet 3x daily. I am a bit nervous about changing medications..and wonder why, after 1 wwek I can take 3 tablets daily. I am nervous, because I do not want the effect, fentanly patches or oxycontin had on me. I would like to know the difference, side effects etc. about opana. thank you I am sorry to have wasted your time, I did not realize I had to pay for an answer, BECAUSE I was hit by a car and have constant pain, my Dr. will not give me a release to go back to work, so unfortunately I will not be able to pay you..thank you, for your interest in my question..and again, I am sorry to have wasted your time.