Suggest Treatment For Chronic Inflammatory Demyelinating Polyneuropathy

Hi, I have been diagnosed with CIDP for the past 2 years (tho the condition has been around for close to 6 years. I am currently on azotropine (150 mg) and go thru IVIG once in two months. I was on steroids for a year and was then taken off the same 6 months ago. Are there any other type of drugs that are useful? Is stem cell therapy an option?