Psychoactive Drug (Paperback)

High Quality Content by WIKIPEDIA articles! A psychoactive drug, psychopharmaceutical or psychotropic is a chemical substance that acts primarily upon the central nervous system where it alters brain function, resulting in changes in perception, mood, consciousness and behavior. These drugs may be used recreationally to purposefully alter one's consciousness, as entheogens for ritual or spiritual purposes, as a tool for studying or augmenting the mind, or therapeutically as medication.