Abstract:However, this conception was strongly challenged from the seventeenth century on, with the development of medical studies, when certain vegetal products that have psychoactive effect started to be valued as a source of energy, stamina, humor and temper balance. As examples, we can mention the opium, originated from the poppy, which was for a long time prescribed as a painkiller, antitussive and antidiarrheal medication, and the marijuana, prescribed as a general sedative, for the specific treatment of rheumati… Show more
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