I have been on ivig every other week since Jan 2010. I have had quite a few other ivig schedules when they have started with the "every day for a week, then 2 days a week, then 1 a week for "x" amount of weeks. I saw improvement many times. The current regimine seemed to work in the beginning but I am now noticing increased weakness. The cramping seems to have improved. I am going to make up a list of questions for my neurologist. I see him in January 2011 but have a need to let him know about the changes before I can see him.