Psycho-active substances

Tolerance - increased doses of psycho-active substances (inch drugs) are required to achieve effects originally produced by lower doses. Note that this term is again used in receptor pharmacology for... 

Intake of psycho-active substances Integrated in common life patterns... 

There is a good deal of confusion over several of the terms used concerning the negative health effects of psycho-active medicinal products. Such confusion is difficult to avoid since the word drug to some means a substance which is used, often illegally, to produce a psychological effect . To others it is synonymous with a medicinal product used on prescription or under the advice of a health professional. 

Harmful use - pattern of psycho-active drug or substance use that is causing damage to health (mental or physical)... 

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