Hello..
I have been getting IVIG treatments for about 15 years and I have learned through the years to hydrate with gatorade and water at least a day or two before as well as during the treatment and a day or two afterward. Although it feels like water overload and i feel full I know if i dont drink up then a day or two later I will be suffering with the worst headache/ fever, body ache ever. I also pre medicate with tylenol and a 5mg non drowsy claritin tablet. Benadryl makes me feel weak so this alternative works for me.
As far as food I still eat as I normally do.