Psychoactive drug

A psychoactive drug or psychotropic substance is a chemical that alters brain function, resulting in temporary changes in perception, mood, consciousness, or behaviour. Such drugs are often used for recreational and spiritual purposes, as well as in medicine, especially for treating neurological and psychological illnesses.

Psychoactive drug chart

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Legend

• Blue: Stimulants generally increase in potency to the upper left
• Red: Depressants generally increase in potency to the lower right
• Green: "Hallucinogens" are psychedelic to the left, dissociative to the right, and generally less predictable down and to the right
• White: Cannabis, though considered psychedelic at high doses, stands on its own