However, nicotine levels are not the same in all types of e-cigarettes, and sometimes product labels do not list the true nicotine content. The e-liquid in most e-cigarettes contains nicotine, the same addictive drug that is in regular cigarettes, cigars, hookah, and other tobacco products. E-cigarette users inhale this into their lungs. How do e-cigarettes work?Д®-cigarettes heat a liquid вЂ“ called e-liquid or e-juice вЂ“ to turn it into an aerosol (sometimes called a 'vapor'). But in fact, e-cigarettes produce an aerosol made up of tiny particles, which is different from a vapor. The use of e-cigarettes is often referred to as вЂњvapingвЂќ because many people believe e-cigarettes create a vapor, which is then inhaled. Because of this, the Food and Drug Administration (FDA) classifies them as 'tobacco products.' What is vaping? They can look like cigarettes, cigars, pipes, pens, USB flash drives, or may be in other forms.Д®-cigarettes include a battery that turns the device on, a heating element that heats the e-liquid and turns it into an aerosol of tiny particles (sometimes called a вЂњvaporвЂќ), a cartridge or tank that holds the e-liquid, and a mouthpiece or opening used to inhale the aerosol.Д®-cigarettes do not contain tobacco, but many of them contain nicotine, which comes from tobacco. What are e-cigarettes?Д®-cigarettes are known by many different names, including e-cigs, electronic nicotine delivery systems (ENDS), alternative nicotine delivery systems (ANDS), e-hookahs, mods, vape pens, vaporizers, vapes, and tank systems.Д®-cigarettes are available in many shapes and sizes. Here we address some of the common questions people ask about e-cigarettes. E-cigarettes are known by many different names, and sometimes people find it hard to understand what is really known about these devices.

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