MixSafe
Recreational drug interaction checker
Common starts
Results
Add two or more substances. Every pair is rated, most concerning first.
Severity scale
- Dangerous
- Unsafe
- Caution
- No data — not the same as safe
- Low risk, increased effect
- Low risk, decreased effect
- Low risk, no synergy
Open any result for what the risk is, why, and where it is documented.
About the checker
A source-backed recreational drug interaction checker
MixSafe — also written Mix Safe — helps you check two or more recreational drugs before mixing them. Search by common, brand, or street name to see each pair's risk rating, explanation, and available sources. It covers 41 substances and 820 combinations.
Results are educational harm-reduction information, not medical advice. A missing interaction is reported as no data, never as proof that a combination is safe.