E Cigarettes Are Effective at Helping Smokers Quit, a Study Says The New York Times Vaping is not replacing smoking. It is often added to it. This is called dual use. Nearly half of e cigarette users still smoke cigarettes. What this means: Smoking continues alongside vaping Did you know that e cigarettes are tobacco products and that the U.S. Food and Drug Administration has not found any e cigarette to be safe and effective in helping smokers quit? Quitting means Quit rate on e cigarettes higher with nicotine NZ Herald E cigarettes can help smokers quitbut do not use them casually, researchers warn