Hi swijung. First thing to know is that we're all different, so responses to treatments may vary.
For me, personally, I have tried WinRho, Prednisone, IVIG and Rituxan. Also had a splenectomy which worked for about a month, then went back to being low. Finally did Rituxan in 2011 which put me in remission.
With the Prednisone, I gained a ton of weight and had some nasty mood swings, which was one reason I went with a splenectomy.
I didn't have any side effects from the IVIG until after the splenectomy; wicked headaches and nausea were the worst.
Since 2011, I have lived my life normally.