Archive note — September 2026: This 2014 guide includes personal nicotine-strength suggestions and health claims that are not current medical guidance. Nicotine is highly addictive, and nicotine-containing vapes can lead to dependence. The CDC states that e-cigarettes should not be used by youth, young adults, or during pregnancy; for adults who smoke, any potential benefit depends on complete substitution for combustible tobacco, not dual use. For individualized cessation support, speak with a health care professional or use evidence-based quit resources. See the CDC’s quitting guidance and health-effects guidance.
Original April 2014 guide
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