Nicotine is a drug that I can't get my head around, I don't know if it's the interfering action on nicotine receptors that makes smoking on DXM instantly get rid of all my muscle rigidity and clears my nostrils, making me feel instantly different, or the alkaloids in tobacco. Also I started using nicotine patches a few days ago and it is the best nootropic by far I've ever used. But still has the unpleasant side effects of headaches and making everything too clear. Anyone else use nicotine for therapeutic reasons?