I do IVIG every 4 weeks along with with a Ultomiris infusion or a booster of Ultomiris (1/2) dose. I get a severe headache, body aches, sleepiness, bruising, nausea and my double vision is worse. We have slowed the rate down, plus I take Tylenol and Benadryl before each infusion. I have found a food migraine that & a dark room help with some of the side effects. I take mestinon, Prednisone, and azathioprine for my MG. My neurologist says that I am "critically stable". I usually score 18-19 on my MG ADL. We tried central lines for plasma phresis. They caused blood clot, bleeding and infections. Plasma phresis works the best for controling my MG. It is not an option anymore. So I'm back to doing IVIG.