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.
- DangerousCocaína + AlcoholMechanism, risks, harm reduction
- DangerousKetamina + AlcoholMechanism, risks, harm reduction
- DangerousXanax (Alprazolam) + AlcoholMechanism, risks, harm reduction
- DangerousXanax (Alprazolam) + OpioidesMechanism, risks, harm reduction
- DangerousValium (Diazepam) + AlcoholMechanism, risks, harm reduction
- DangerousGHB / GBL + AlcoholMechanism, risks, harm reduction
- DangerousGHB / GBL + KetaminaMechanism, risks, harm reduction
- DangerousTramadol + AlcoholMechanism, risks, harm reduction
- DangerousTramadol + MDMAMechanism, risks, harm reduction
- UnsafeMDMA + AlcoholMechanism, risks, harm reduction
- UnsafeMDMA + CocaínaMechanism, risks, harm reduction
- UnsafeAnfetamina + AlcoholMechanism, risks, harm reduction
- UnsafeMefedrona + AlcoholMechanism, risks, harm reduction
- UnsafeMefedrona + MDMAMechanism, risks, harm reduction
- UnsafeGHB / GBL + MDMAMechanism, risks, harm reduction
- CautionMDMA + CannabisMechanism, risks, harm reduction
- CautionMDMA + LSDMechanism, risks, harm reduction
- CautionMDMA + KetaminaMechanism, risks, harm reduction
- CautionCocaína + CannabisMechanism, risks, harm reduction
- CautionCocaína + KetaminaMechanism, risks, harm reduction
- CautionKetamina + MDMAMechanism, risks, harm reduction
- CautionLSD + AlcoholMechanism, risks, harm reduction
- CautionLSD + CannabisMechanism, risks, harm reduction
- CautionLSD + MDMAMechanism, risks, harm reduction
- CautionHongos de psilocibina + AlcoholMechanism, risks, harm reduction
- CautionHongos de psilocibina + CannabisMechanism, risks, harm reduction
- CautionAnfetamina + CannabisMechanism, risks, harm reduction
- Caution2C-B + MDMAMechanism, risks, harm reduction
- UnknownLSD + Hongos de psilocibinaMechanism, risks, harm reduction
- UnknownXanax (Alprazolam) + CocaínaMechanism, risks, harm reduction