I've been doing IVIg every 2 weeks since October with virtually no side effects except a little joint soreness that is usually gone the day after the infusion.

It seems like the most common side effect I read about here is headaches, but I haven't experienced much of this as long as I'm properly hydrated before the infusion. I usually bring along a liter of water and drink it over the 3 hours it usually takes for the treatment.

The rate of the infusion is something you'll want to note, but they always start slow and then ramp up from there to whatever the pharmacist and / or doctor order.

Personally, I have done 300+ with no problems and all this really does for me is get me out of there faster.