I have been on weekly doses of 1g methylprednisolone that are gradually being reduced. I have an autoimmune disease that's in remission and now the cellcept is to keep the disease at bay. I have started on 500mg cellcept twice a day, and I now have insomnia, apparently from the cellcept. I can 't get any sleep without Meds, and i'm supposed to double the cellcept dosage in a week. Have never had insomnia before. Has anyone else had insomnia from cellcept? Does it get better over time? Also, I feel quite weak and wonder if this will eventually go away? Thanks.