Nicotine

(en.m.wikipedia.org/wiki/Nicotine)

Nicotine is a potent parasympathomimetic alkaloid
found in the nightshade family of plants ( Solanaceae) and a stimulant drug. It is a nicotinic acetylcholine
receptor agonist . It is made in the roots and accumulates in the leaves of the plants.

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Duloxetine – Wikipedia, the free encyclopedia

http://en.m.wikipedia.org/wiki/Duloxetine