Reference · 2026
Substance interactions.
Pharmacology, concrete risks and harm-reduction for the 30 most-searched substance combinations. Each combo has its own page with mechanism notes, what to watch for, and what to do if you already mixed.
For arbitrary multi-substance combos use the interactive checker.
- DangerousKokain + AlcoholMechanism, risks, harm reduction
- DangerousKetamin + AlcoholMechanism, risks, harm reduction
- DangerousXanax (Alprazolam) + AlcoholMechanism, risks, harm reduction
- DangerousXanax (Alprazolam) + OpioideMechanism, risks, harm reduction
- DangerousValium (Diazepam) + AlcoholMechanism, risks, harm reduction
- DangerousGHB / GBL + AlcoholMechanism, risks, harm reduction
- DangerousGHB / GBL + KetaminMechanism, risks, harm reduction
- DangerousTramadol + AlcoholMechanism, risks, harm reduction
- DangerousTramadol + MDMAMechanism, risks, harm reduction
- UnsafeMDMA + AlcoholMechanism, risks, harm reduction
- UnsafeMDMA + KokainMechanism, risks, harm reduction
- UnsafeAmphetamin + AlcoholMechanism, risks, harm reduction
- UnsafeMephedron + AlcoholMechanism, risks, harm reduction
- UnsafeMephedron + MDMAMechanism, risks, harm reduction
- UnsafeGHB / GBL + MDMAMechanism, risks, harm reduction
- CautionMDMA + CannabisMechanism, risks, harm reduction
- CautionMDMA + LSDMechanism, risks, harm reduction
- CautionMDMA + KetaminMechanism, risks, harm reduction
- CautionKokain + CannabisMechanism, risks, harm reduction
- CautionKokain + KetaminMechanism, risks, harm reduction
- CautionKetamin + MDMAMechanism, risks, harm reduction
- CautionLSD + AlcoholMechanism, risks, harm reduction
- CautionLSD + CannabisMechanism, risks, harm reduction
- CautionLSD + MDMAMechanism, risks, harm reduction
- CautionPsilocybin-Pilze + AlcoholMechanism, risks, harm reduction
- CautionPsilocybin-Pilze + CannabisMechanism, risks, harm reduction
- CautionAmphetamin + CannabisMechanism, risks, harm reduction
- Caution2C-B + MDMAMechanism, risks, harm reduction
- UnknownLSD + Psilocybin-PilzeMechanism, risks, harm reduction
- UnknownXanax (Alprazolam) + KokainMechanism, risks, harm reduction