The effect of
Nicotine, an active ingredient of tobacco, is a psychoactive drug - one that affects mind and behavior. It produces only a slight high in first-time users and it does not impede daily functioning to the same extent as other drugs.
Nicotine interacts with specific receptors in brain tissue, and initiates metabolic and electrical activity in the brain. In addition, nicotine causes skeletal muscle relaxation. It also acts on
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