My doctor started me on this a little over a week ago and I am already touting it to be the wonder drug! In 8 days I have gone from over a pack a day to half a pack. No side effects that I can tell and I feel great. I have picked the 27th (the day my dad passed away 14 years ago) as my "day" to quit. You don't know how happy I am and how excited husband is for me. I know there was a post on here a while back about Chantix. The only drawback is that most insurance companies aren't covering it yet. Mine does (UHC) but it is $35/month, but since that's under a third of what I spent on smoking it is so worth it. The doctor said NOT to quit smoking when you first start taking it and that after about 2-3 weeks I should just not want to smoke. I am almost to that point. I really think I am going to be successful this time. The only other times I have quit smoking for the last 30 or so years is when I was pregnant with both boys. Just thought I would pass this info along...I am loving it!!!