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Nicotine - Wikipedia
Nicotine: How It Works, Uses, Risks, Benefits - Verywell Health
Nicotine Is Why Tobacco Products Are Addictive | FDA
What Nicotine Does to Your Body - Verywell Mind
Nicotine dependence - Symptoms and causes - Mayo Clinic
Nicotine: Facts, effects, and dependency - Medical News Today
Nicotine | Tobacco, Addiction, Poison | Britannica
Nicotine - American Lung Association
Nicotine Poisoning: Symptoms, Causes, Treatment & Prevention
How Smoking and Nicotine Damage Your Body