Aripiprazole
"This medication knocked out my anxious, OCD-driven ruminations unlike any medication or therapy I have tried. I was extremely hesitant to try it due to side effects. But it worked within an hour (at 0.5 mg) and the benefits were dramatic. I was still aware of the anxious thoughts in my head, but I could prevent myself from going down the futile path of rumination.
However, the major drawback is sedation. It's not the "down" sort of sedation I've experienced on other medications. My mood and motivation stay good, but it feels like I need to take a nap mid-afternoon or sleep an extra hour or two. For me, this isn't acceptable long-term. But it's invaluable as a PRN when my anxiety gets super high."