I understand everyone's concern about the FDA not approving the e-cigarette and I was very skeptical at first also. I purchased the NJOY e-cigarette three months ago and started off with high cartridges....I am now on my second week of using lows!! Even though they say this product is not a "quit smoking" product.....it is! Im proof, I just worked my way down to using lows. It was easy because when you start you may puff a lot on the cigarette but overall you are smoking way less than you would because your not smoking a full cigarette like you would have. A few puffs from the e-cig is EQUAL TO A WHOLE REGULAR CIGARETTE. And it feels like it too. Within two weeks I felt sooo much better health wise. About a month ago I ran out of my cartridges and was about 6 hours without....during the six hours I was desperate and purchased a pack of regular cigarettes....WELL I ALMOST DIED! I could only smoke about a third of it and I HAD TO put it out. It hit my lungs like a brick and made me feel sick! That was the end of that! Im tellling you the truth, I have been a smoker for twenty years and was up to a little over a pack a day.....AND I CAN NO LONGER GO BACK TO SMOKING, I actually despise it! I am looking forward switching to "blanks" now and will do it by switching back and forth from lows to blanks and then eventually all blanks and by then I should be done with the product. I find myself now going a few hours without e-cig and then realizing OMG! I HAVE'NT EVEN THOUGHT OF USING IT! You know what that means right? That means I am mentally and physically done with the addicting factors of nicotine..at least I am almost there! If you are undecided about this product, buy it anyway...he for the money arent you worth trying? About the FDA...hey look at what they are selling us in regular cigarettes? Are they approved by the FDA? THEY ARE KILLING PEOPLE EVERY DAY SO THE FDA CAN KISS MY @&*%!!!! I feel so much better, I could run a mile right now without being slightly winded....does that sound like the e-cig is hurting me in anyway? Please first try it for yourself...dont listen to others negative stories...like anything, there are always the few that have side effects, but for the majority of the population, this product works!