Chantix can really cause some very bad chemistry and neurological issues, before you realize they're happening. Consult your Dr before stopping cold turkey though. Patches & gum aren't much better, common side effect of patches are heart attacks I know that from experience. If your doing the chantix w success, fantastic on the no smoking part of the process, but maybe even a little nic in your juice might be better then dealing w side effects later of the prescription chantix, IMO. The ecigs did the trick for me. I tried all the above and like you still needed the cessation of vaping. Good luck