Hierarchy classification:

1. top of the aat hierarchies
2. Materials Facet
3. Materials (hierarchy name)
4. materials (substances)
5. [materials by function]
6. drugs

Anotations

Scope note:

Drugs, products, or agents that are consumed for pleasure, and that stimulate bodily functions, consciousness, elevate mood, feeling, or cognizance. These may be found in certain foods or plants, and include caffeine, nicotine, and amphetamines.