Some people experience a sort of "numbness" or lack of passion about things they were formerly interested in, but that doesn't happen to everyone. It did happen to me. But you're not mentally unaware of it, although it can be subtle, and if that happens, you can go off the meds (under your doctor's care; don't go off them too soon, or you could have some bad withdrawal symptoms). I am also doing that, and I'm at a much lower dosage than my highest dosage, and the passion is coming back, so it's not permanent.

Hope this helps.