I'm a 25yr smoker. Never really exceeded a pack a day for very long, but still a horrible habit all the same. Tried Chantix years ago, first week was a cake walk since I could smoke while taking it. By the end of week 1, cigs tasted like anus and I had nearly no craving. Quit for about 5 days before absolutely horrific nightmares started costing me sleep, peace of mind, and a bit of an attitude change too. It got so bad, I couldn't stay on the drug so quit dosing. A couple days later, cravings were back and I was hating life so back to smoking I went. I've tried dipping, no satisfaction imo. Had the original E-cigs when they first came out, wasn't too bad of a substitute but didn't stick with them and eventually the atomizers both broke. Determination and cold turkey only got me through 3-4 days before I relapsed. Nicotine is quite an addictive little bastard. My wife took something similar and it worked for her with far less side effects and she stayed a quitter for almost 6 yrs now.....I just have trouble trusting drugs to curb cravings since my bout with Chantix, but I have to do something soon to get off these things. Good luck to ya James