My General Physician is recommending that I have IVIG and is going to suggest it to my Pulmonologist -who likewise mooted it a couple of months ago. If the Pulmonologist recommends and orders it, I will get it free as it will be through our wonderful Public Hospital system where we don't pay anything at all.

Have you had low IgG's? Mine are low and I'm not mounting a sufficient IgG response to infection evidently.

So I can't help you as to how it has worked but just to say that it is in the pipeline for me also.