Nicotine

Nicotine is a potent parasympathomimetic stimulant and an alkaloid found in the nightshade family of plants. Nicotine acts as an agonist at most nicotinic acetylcholine receptors (nAChRs), except at two nicotinic receptor subunits (nAChRα9 and nAChRα10) where it acts as a receptor antagonist. Nicotine is found in the leaves of Nicotiana …

Nicotine is a chemical compound that is present in tobacco. When tobacco is smoked, nicotine is absorbed through the wall lining of the small air sacs in the lungs.

Tobacco is a member of the deadly nightshade (or belladonna) family of flowering plants, a family that also includes potatoes, tomatoes, eggplant, and capiscum pepper plants — a family rich in alkaloids. About 5 percent (by weight) of the tobacco plant is nicotine (C10H14N2), a naturally occurring liquid alkaloid.

Nicotine is a potent parasympathomimetic stimulant and an alkaloid found in the nightshade family of plants. Nicotine acts as an agonist at most nicotinic …

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