My son, age 9, gets IVIG, every other week. Small doses due to headaches/vomiting/aseptic meningitis reaction. We have found lots of fluids, gatorade for him, before, during, after. Lots of rest. And make sure they pre and post medicate. The pre and post meds make all the difference for him. Have tried to wean him off the meds, and all the headaches and issues reappeared. We pre-med with Solumedrol, Benadryl, and Vicodin (NSAID allergy). He is post-med with Prednisone, Vicodin, and Atarax. They also started giving him Bolus fluids before and after each infusion, has helped tremendously. Good luck with your infusion...hoping you get great results!!