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  1. 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 …

  2. What Nicotine Is and How It Affects Your Body - Verywell Health

    Dec 4, 2025 · Nicotine is an addictive substance found in tobacco; it's what makes smoking and tobacco use hard to quit. If you stop using nicotine products, withdrawal symptoms may be …

  3. 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. Some of these …

  4. 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 …

  5. 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 …

  6. Nicotine | Tobacco, Addiction, Poison | Britannica

    Nov 28, 2025 · Nicotine, an organic compound that is the principal alkaloid of tobacco. (An alkaloid is one of a group of nitrogenous organic compounds that have marked physiological …

  7. What Is Nicotine: Facts, Side Effects, Treatment, and Therapies

    Nicotine is an alkaloid stimulant that comes from the nightshade family of plants, particularly from the leaves of tobacco. The type of nicotine found in tobacco plants is called Nicotiana tabacum.

  8. Nicotine: Everything You Need to Know - Ecigator

    Mar 10, 2023 · Nicotine is a highly addictive substance found in tobacco products and e-cigarette liquids. It also be used as a pesticide.

  9. Nicotine - Stanford University

    Nicotine is the primary addictive chemical in tobacco and has various positive effects on the body, such as decreasing appetite to control weight gain, improving mood, and increasing the ability …

  10. Nicotine benefits, dosage, and side effects - Examine

    Aug 28, 2025 · Nicotine is the main stimulatory compound found in cigarettes and is now sold in vaporizers and patches in isolation. It works on the acetylcholine system, and is implicated in …