thanks for writing me back about this, i am on Gammagard made by Baxter, i have gone to their site and checked it out, i wanted to know if you get a very bad headache with your therapy and nausea, i have been bothered greatly by these two things, and am trying chemo type things to control it, as in Zophran for nausea, and OxyContin for pain control and Oxy IR for headache, i take the therapy for three days at 70 grams per day and then by the four or fifth day i am sick with a headache and nausea to the point of vomiting if not medicated.....i was wondering if yours is the same situation or if you are given yours differently to avoid side effects, thanks in advance for answering me back,