So, my pdoc cut my Memantine dose in half. It's an Alzeimers drug that they have found can help sometimes with extreme OCD. You only take it for a few months to kind of re-wire the receptors. Anyway, I've had a 24 hour panic attack with obsessing too! I'm obsessing over some computer stuff and I can't let it go! I was up pretty much all night with my heart raecing, hot flashes, shaking, nauseous, etc. It's still going on and so is the obsessing! My Xanax isn't even touching it! I keep telling myself that the obsession is temporary. My feeling is just chemical. I'm so tired of mental illness!!!!!!!!