Divalproex sodium
"I have been experiencing migraine from my teens. It has peaked in the middle age. After retirement it has again started viciously, the neurologist said it is because of pill pooping out. Tried propronolol, topiramate etc etc and even tried valproatete. Finally I tried divalporex ER 500 within days the migraine episodes came down and migraine if any does not progress into throbbing episodes requiring triptans. Gladly it goes away like a normal headache."