c5a18f9f__Drug_Policy_Reform___Glossary__Definition
[Term] Psychotropic substance (see also psychoactive) [Definition] 
Used synonymously with psychoactive substance, however the term refers to drugs primarily used in the treatment of mental disorders, such as anxiolytics, sedatives, neuroleptics, etc. More specifically, the term refers to the substances covered in the 1971 Convention on Psychotropic Substances.
Global Initiative for Drug Policy Reform » Glossary
Definition