I'm on Topomax for the IIH. I have not had any bad side effects that I can tell. I do have a much lower appetite, but I welcome that! I also have some inflammatory arthritis in my spine and large joints and fibromyalgia. I take Flexeril daily for that, but had to stop the Plaquenil because I was getting horrible sunburns (a known side effect). I also take Effexor for my anxiety, which is also an appetite suppressant (yippee!) and I think also has helped me just get back to being more of myself instead of sick me. There is some fatigue but I sleep so much better now. I have no leaks, but my eye sight and hearing were greatly effected along with my balance. I have honestly seen a great improvement in all my symptoms but every person is so different.