Psychopharmacology is the study of the effects of any psychoactive drug that acts upon the mind by affecting brain chemistry. Amanita muscaria (the common Fly Agaric) is often regarded as the first such drug, with modern theories positing the discovery of its psychoactive properties circa 10,000 BCE. Modern psychopharmacology studies a wide range of chemicals with many different types of effect.

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Psychopharmacology is the study of the effects of any psychoactive drug that ...
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