E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA Vaping Devices (Electronic Cigarettes) DrugFacts National Institute on Drug Abuse (NIDA) 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, How Electronic Cigarettes Work HowStuffWorks