Nicotine - Wikipedia
Nicotine is typically consumed through tobacco smoking, vaping, or other nicotine delivery systems. An average cigarette yields about 2 mg of absorbed nicotine, a dose sufficient to …
What Nicotine Is and How It Affects Your Body - Verywell Health
Dec 4, 2025 · Nicotine, a highly addictive stimulant found primarily in tobacco plants, plays a significant role in smoking addiction due to its effects on the brain's pleasure and reward …
What Nicotine Does to Your Body - Verywell Mind
Sep 24, 2025 · Nicotine increases heart rate and blood pressure, and long-term use can damage your heart and lungs. Overcoming nicotine addiction is hard, but therapy and nicotine …
Nicotine Is Why Tobacco Products Are Addictive | FDA
Nicotine is what keeps people using tobacco products. However, it’s the thousands of chemicals contained in tobacco and tobacco smoke that make tobacco use so deadly.
Nicotine dependence - Symptoms and causes - Mayo Clinic
Jun 14, 2025 · Nicotine is the chemical in tobacco that keeps you smoking tobacco. Nicotine reaches the brain within seconds of taking a puff. In the brain, nicotine increases the release of …
Nicotine: Facts, effects, and dependency - Medical News Today
Jul 1, 2024 · Nicotine is a highly addictive substance found in tobacco products and can be the reason many people consume tobacco. It may cause side effects such as dizziness, racing …
Nicotine | Tobacco, Addiction, Poison | Britannica
Nov 28, 2025 · Nicotine is the chief addictive ingredient in the tobacco used in cigarettes, cigars, and snuff. In its psychoactive effects, nicotine is a unique substance with a biphasic effect; …