Topamax
"This drug is horrible. 
Pros: yes, it destroys your appetite and you lose weight bc of that. You also don't enjoy food, which made me less inclined to want to cook for others  (note: I am a foodie and love to cook).
Cons: This drug did zero for my migraines. I take Amerge; works!
I felt so foggy and "in and out" of ability the abilty to concentrate in the mornings (100mg nightly dosage). ok after 4 hrs. 
My mouth was literally so dry and my tongue so thick feeling, I could not get 3 syllable words out. Also, I had to grasp for words. I was losing confidence in my own performance and others commented on my lack of "snap." This was after a YEAR!
Short term memory was shot, perhaps bc of "in and out" concentration. Hair! Had to get extensions!"