Mechanisms & concepts
Explore chemical families, biological targets, enzymes, and exposure contexts. Shared concepts connect the substance library to the evidence.
Serotonin
A transmitter with multiple receptor families; receptor activity is not a benefit score.
Serotonin 5-HT2A receptor
A serotonin receptor implicated by human antagonist experiments in acute psilocybin effects.
Stimulant
Compounds associated with increased arousal; mechanisms and risks differ.
Tobacco-smoke exposure
Smoke exposure can induce CYP1A2 activity. This context is distinct from nicotine exposure and from the route of caffeine administration.
US federal Schedule I
A US federal classification; not a worldwide or state-level legal conclusion.
Definitions are original editorial summaries with linked sources. A connection describes its recorded context; it does not establish a universal effect or clinical benefit. Read our methods.