... prescribed sr morphine it really made a difference now eight years later I have had an operation whuch severed the nerves to my kidneys so now thankfully I don't have any pain but now I don't need the morphine but find that I need it on a daily basis.My dr has changed my fast acting morphine to a slow acting type but 5 days in I feel so bad has anyone any ideas which will help me to get through the next few weeks