Prozac shut off the noise of obsessing for me. I remember very clearly my first weekend when i took it. The dr had given me 10 mg capsules. I took one pill, nothing. An hour later, i took another. An hour later, i took a third, and all of a sudden, there was quiet. Ive been told that they are not supposed to work like that, that i have a different diagnosis (i forget what), but i dont care. It stopped the chatter in my brain.