After several months of taking Chantix, I have decided to stop taking it. It gives me mood swings and interrupts my sleep. I cut my dose in-half to avoid the nausea and it worked....still irritable though. I am ready to do this on my own. I am over 100 days smoke-free and nervous about this. I think I'll be ok though. I am on day 2 without the Chantix and feeling fine, in fact, feeling better. I am optimistic about this because I am serious this time, and I have this awesome support group to help me along the way. So here we go guys!