Last updated: March 5, 2026
By accessing and using SubstanceWiki ("substancewiki.org", "the Site"), you agree to be bound by these Terms of Service. If you do not agree with any part of these terms, you should not use the Site.
SubstanceWiki is an educational resource dedicated to providing evidence-based information about psychoactive substances. The Site's primary purpose is harm reduction through education.
Important Notice
The information on this Site is provided strictly for educational and harm reduction purposes. It does not constitute medical advice, legal advice, or encouragement to use any controlled or uncontrolled substance. SubstanceWiki does not promote, condone, or facilitate the use of illegal substances.
Nothing on SubstanceWiki should be interpreted as medical advice, diagnosis, or treatment recommendation. The substance information, dosage ranges, interaction data, and effect descriptions presented on this Site are compiled from publicly available sources and community reports for educational purposes only.
The legal status of substances varies significantly by jurisdiction. Information about legality on this Site is provided for general awareness only and may not reflect current laws in your location. Always verify the legal status of any substance in your jurisdiction before taking any action.
Always consult a qualified healthcare professional before making decisions about substance use, and seek legal counsel for questions about substance legality.
SubstanceWiki operates under the principle that people who choose to use substances deserve access to accurate, unbiased information to reduce potential harm. Our content is designed to:
While we strive to provide accurate and up-to-date information, SubstanceWiki makes no warranties or representations regarding the completeness, accuracy, reliability, or suitability of the information provided. Substance information, including dosage ranges, interactions, and effects, may be incomplete, outdated, or inaccurate.
Individual responses to substances vary widely based on body chemistry, tolerance, health conditions, and other factors. Dosage ranges are approximate guidelines, not prescriptions. Interaction data may not cover all possible combinations.
Use all information at your own risk.
By using this Site, you acknowledge and agree that:
SubstanceWiki is an open-source project. The source code is available under an open-source license.
Encyclopedia content (substance descriptions, effect documentation, and educational text) is available under the Creative Commons Attribution-ShareAlike 4.0 International (CC-BY-SA 4.0) license. This means you are free to share and adapt the content, provided you give appropriate credit and distribute your contributions under the same license.
Data sourced from third parties (PsychonautWiki, TripSit, academic literature) retains its original licensing. We provide attribution to all data sources.
You agree not to use SubstanceWiki to:
To the fullest extent permitted by law, SubstanceWiki and its contributors shall not be liable for any direct, indirect, incidental, consequential, or punitive damages arising from your use of or inability to use the Site, or from any information obtained through the Site.
This includes, but is not limited to, damages arising from reliance on substance information, dosage data, interaction reports, or any other content provided on the Site. You acknowledge that substance use carries inherent risks and that SubstanceWiki cannot guarantee the safety of any substance or combination.
The Site is provided "as is" and "as available" without warranties of any kind, either express or implied.
We reserve the right to modify these terms at any time. Changes will be effective immediately upon posting to this page. Your continued use of the Site after changes are posted constitutes acceptance of the updated terms.
For questions about these terms, contact us at contact@substancewiki.org.