Eva Lou - Wow, I'm impressed, I had never even *heard* about
IvIg until your post and I spend a great deal of time scouring medical Journals for the latest and greatest new treatments for auto-immune diseases.
Ok, what I have been able to find out explains why its so darned expensive, but thankfully (for many people's ethical reasons) its not quite stem-cell tech.
Ok, IvIg is otherwise known as Intravenous Immunoglobulin therapy. The idea of this is to inject into the patient, the pooled antibodies from the healthy immune systems of at least 1000 donors (hence the expense), with effect lasting up to 3 months. It is NOT however in any way FDA approved, or even used off label for UC or Crohn's.
For those interested in some more info, I found an article thats pretty easy to read