Contribute
The most valuable contributions are data corrections. If you see something wrong - a safety rating, an addiction percentage, a combination rating - we want to know.
Report a data issue
1. Email corrections@opensubstance.org
2. Tell us which substance and what's wrong
3. Include a source (study, dataset, or article)
We don't change data based on opinions - we need evidence.
What we need help with
Data verification and corrections
New substance profiles with sourced data
Combination mechanism explanations
Data standards
Sourced - every number traces to a published study or established organization
Conservative - when sources disagree, we use the safer estimate
Honest - we say "unknown" rather than guess
Plain language - no jargon