In electronic cigarettes (e-cigarettes), the active substance is liquid nicotine; no other tobacco products are present. Electronic cigarettes and vaporizers were initially marketed as a device to help people quit smoking tobacco, but e-cigarette users remain addicted to nicotine. E-cigarettes have not received U.S. Food and Drug Administration (FDA) approval as smoking cessation devices.
In addition to water and the active ingredient, commercially produced vaping liquids usually contain propylene glycol or vegetable glycerin-based liquid along with flavoring and other chemicals, including trace amounts of metals. Illicitly produced vaping agents likely contain additional inactive ingredients, some of which, such as vitamin E acetate, may be involved in vaping-related lung injury.
Potential complications of vaping include
One concern is that nonsmokers, particularly adolescents, who inhale nicotine, become addicted.
Certain substances in the vapor appear to lead to severe lung injury and sometimes death. The Centers for Disease Control and Prevention (CDC) , the FDA, and other clinical and public health partners are investigating a national outbreak of e-cigarette, or vaping, product use-associated lung injury. (See CDC: Outbreak of Lung Injury Associated with the Use of E-Cigarette, or Vaping, Products.)
THC-containing vaping products and those with vitamin E acetate are linked to cases of severe lung injury related to vaping. The CDC and FDA recommend that people not use THC-containing e-cigarette, or vaping, products, particularly from informal sources like friends, family, or in-person or online dealers. Vitamin E acetate should not be added to any e-cigarette, or vaping, products.
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