Hi Joyce! I have a question also! Is not naltrexone just a treatment as you say and not a cure! Does naltrexone deal with pain only or does it do or help in any other way!I know naltrexone does something with the pain centers and opiate receptors but does nothing to treat the cause of M.S.! Which from what I've studied is caused by toxins, mercury etc. While using naltrexone for pain should'nt M.S. sufferers still be cleansing and purging! Grog