where did nicotine originate
Nicotine is a potent parasympathomimetic alkaloid found in the nightshade family of plants (Solanaceae) and is a stimulant drug. Nicotine is a nicotinic acetylcholine receptor (nAChR) agonist, except at nAChRÎ±9 and nAChRÎ±10 where it acts as an antagonist.