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Synapedia is an independent knowledge project about psychoactive substances and harm reduction. If the platform helps you learn something new, you can support its development.
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Analyze pharmacological interactions between substances
Scientific education tool — not medical or clinical advice. In emergencies, contact emergency services immediately.
Choose two substances to analyze their interaction, pharmacological mechanism, and harm reduction guidance.
Pick an example combination or search manually
The Synapedia Interaction Checker identifies known pharmacological interactions between psychoactive substances using curated, source-backed data. Each interaction entry includes the underlying mechanism conflict, a risk rating, and concrete harm-reduction guidance.
Explore substance relationships visually in the Knowledge Graph or compare two substances side by side in the Comparison Tool.
The Interaction Checker is based on curated data from pharmacological literature and PubMed publications. It is intended for scientific education only and does not replace medical advice. Not all interactions are covered — always consult healthcare professionals when in doubt.