Psychoactive drug Wikipedia. A psychoactive drug, psychopharmaceutical, or psychotropic is a chemical substance that changes brain function and results in alterations in perception, mood, consciousness or behavior. 1 These substances may be used medically recreationally to purposefully improve performance or alter ones consciousness as entheogens for ritual, spiritual, or shamanic purposes or for research. Some categories of psychoactive drugs, which have therapeutic value, are prescribed by physicians and other healthcare practitioners. Examples include anesthetics, analgesics, anticonvulsant and antiparkinsonian drugs as well as medications used to treat neuropsychiatric disorders, such as antidepressants, anxiolytics, antipsychotics, and stimulant medications. Some psychoactive substances may be used in the detoxification and rehabilitation programs for persons dependent on or addicted to other psychoactive drugs. Psychoactive substances often bring about subjective although these may be objectively observed changes in consciousness and mood that the user may find rewarding and pleasant e. PDF printable version of 4. 7 Influenza of the 10th edition of the Handbook. This chapter was amended on February 2017. 4. 7. 1 Virology 4. 7. 2 Clinical features. Describes the memberships, activities and outings of this Durban club.
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