Sources checked October 17, 2026 · 29 categories · Free access, no account required
Build the list you want to discuss.
Select every listed substance involved, including prescribed medicines. Categories group different chemicals; exact names still matter. We check selected pairs, not the effect of the entire mixture. Dose, timing, health conditions and unknown ingredients can change risk.
Unreviewed does not mean safe.
There is no universal compatibility score, safe dose, or waiting-time calculation. Do not stop or adjust prescribed medicines based on this tool. A pharmacist or prescriber needs the exact products.
Use the list below if a name is not recognized. Commas stay inside names such as N,N-DMT and 1,4-BD. Brand names and combination tablets may contain ingredients absent from this tool.
Select at least two categories to see available warnings. A missing result is not reassurance.
Read the evidence for each substance.
Every listed category links to a guide entry covering known risks, interactions, uncertainties and misconceptions. Grouped entries distinguish different drugs.