How Electronic Cigarettes Work HowStuffWorks Electronic cigarette Wikipedia Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes, E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA The Health Risks Of E Cigarettes Versus Traditional Cigarettes Henry Ford Health Detroit, MI Electronic cigarette Wikipedia