Nicotine is a found in the plant. It is used in ,,,&Tabacco.

Nicotine is a chiral alkaloid that is naturally produced in the nightshade family of plants (most predominantly in tobacco and Duboisia hopwoodii)[6] and is widely used recreationally as a stimulant and anxiolytic. As a pharmaceutical drug, it is used for smoking cessation to relieve withdrawal symptoms.[7][4][8][9] Nicotine acts as a receptor agonist at most nicotinic acetylcholine receptors (nAChRs),[10][11][12] except at two nicotinic receptor subunits (nAChRα9 and nAChRα10) where it acts as a receptor antagonist.[10]

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MARK ME AS BRAINLIEST

with out the ancient ppl we wouldnt have medicine beacuse they taught us.