I get IVIG every 2 weeks, for a year now.

Only side effect I have had was the headache (3 nights in a row no sleep and nothing touched it).

Please just do as they say and DRINK plenty of water!!

I buy an extra gallon every other sunday night and take it with me on the way to ivig.

I start slugging it on the drive over and while in the ivig treatment (I'm usually there 4 hours) I will consume the rest of that gallon.