ADHD Research Explorer

What acts on the ADHD brain, and what the research actually says.

Start here

This is a research reference, not medical advice. Everything on this site — including the illicit-drug entries — is presented to summarize published research on mechanism and evidence quality, never as a recommendation to use, combine, or stop any substance. Legal status varies by country. Talk to a clinician about your own situation.

Click a brain region

Simplified, illustrative diagram — not to anatomical scale. Each region links to the substances known to act there.

Simplified side-view brain diagram with six clickable regions

    Select a region to see what acts there.

    Explore substances

    Evidence: RCT Observational Mixed Animal Anecdotal

    How this site works

    New studies arrive by email, get parsed automatically, and sit in a review queue until a human checks and tags them — nothing gets published straight from an inbox. Evidence-strength badges reflect the best evidence available for each substance, not a guarantee of effectiveness or safety.