Is cocaine the most potent stimulant of natural origin? Perhaps. This depends on what you would call 'most potent'. Khat, for instance, contains naturally occuring forms of amphetamine. Is that a more potent stimulant? Neither cocaine nor the amphetamine in Khat would be as potent if it wasn't refined, after all.
Is cocaine used medically? Yes. There is clinical use of cocaine as a local anesthetic, particular in Ear, Nose and Throat surgery(ophthalmology) as it is also an vasoconstrictor. Beyond this, there are modern studies that show that coca, if not cocaine, have various medical potentials.
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Lithium is found in many grains and vegetables. Its natural origin is the soil where these grains and vegetables were planted at.
nature
India
Carbonated waterSugar (sucrose or high-fructose depending on country of origin)CaffeinePhosphoric acid v. Caramel (E150d)Natural flavoringsYou probably ask because of the rumor that Coca-Cola has cocaine in it. It did once contain an estimated nine of cocaine per glass, but in 1903 it was removed. Coca-Cola still contains coca flavoring.Props to Wikipedia.
The natural combativeness of men.
UK
Spectral approaches are ways of isolating molecules. Molecules of natural origin are those that are found in nature and have not been modified.
Natural, chemical derivative, and synthetic.
Some good natural cosmetics are Jane Iredale Liquid Eyeliner and Organic Wear Natural Origin Eye Liner. Other good natural cosmetics are Bare Minerals Liner Shadow and Organic Wear 100% Natural Origin Mascara.
Charles Darwin wrote several books, but he is most famous for "On the Origin of Species by Means of Natural Selection"
November 1859