As a former Newport lifelong smoker, I am quit now for 2 years thanks to the e cigarette. I am using the ego 500 a push button model whose battery lasts for days. I still get my nicotine fix by adding the juice and the same great smoking sensation without the 4000 chemicals that give you cancer and heart disease. Nicotine is a stimulant, however I feel this is much safer after failing with pills, patches and gum. What an invention! I can't find any negative health consequences as a result of using these. I can give you web sites that sell them and juice if you so desire. No more cough,weakness ,yellow teeth or stink. The e cigarette should be FDA approved now! Maybe the tobacco companies are worried! Thanks