Wikimedia Commons has media related to Psychoactive drugs by mechanism of action.
 | This is a set category. It should only contain pages that are psychoactive drugs or lists of psychoactive drugs, as well as subcategories containing those things (themselves set categories). Topics about psychoactive drugs in general should be placed in Category:Psychoactive drugs or one of its subcategories. |
| This is a container category. Due to its scope, it should contain only subcategories. |