This looks like an old, inactive thread but I'll add my 2 cents.
I took Chantix the first time and I think it helped me quit for about 6 months. I was really pumped to quit though. I think I would have without the pills anyway. I did get the bad dreams and a little bit of indigestion. I did start feeling really weird though. I've never had depression, but my ex-wife did. I could never understand where she was coming from, but I was beginning to understand.
I quit the Chantix after a couple of months but kept non smoking for a longer period. Anyway, I started again. After a few months I decided to quit again. I still had the Chantix prescription so bought some more. This time it didn't do anything in the week I took it other than the weird feeling coming back. I quit taking it immediately. I figured it was better to smoke than ruin my life with the pills.
I procrastinated quitting for awhile longer. I went to my local pharmacy and asked if Nicotrol (little plastic cigarette holder looking things that you insert a nicotine cartridge into) was available and if it was over-the-counter or prescription. My mom had given me some of these after she had quit due to health reasons. I think they also helped me in my first quasi-attempt in quitting.
The pharmacist said they were in-fact prescription and they cost over $100 per month. They quit stocking them because they were that expensive. I was a little miffed that they also required a doc prescription. The pharmacist suggested I check out the e-cig world as she had known some people who'd had success with them.
The rest is good! It's only been 5 weeks smoke-free, but I don't even want to smoke now. I haven't got off my nicotine addiction, but the smoke, tar, burned stinking clothing and vehicle, smelly breath, etc., etc. is toast.
It will be an absolute travesty if e-cigs are banned or regulated. One thing I do know is I'll never take or recommend Chantix to anyone I know. The stuff is wicked, just wicked.