Mobile-first, harm-reduction focused tool to check drug combination risks. Pick up to three substances and see detailed safety information. Matrix is downloadable + shareable. Want the full picture on what psychedelics and hallucinogens do, plus risky combos and fake acid warnings? See our Psychedelics & Hallucinogens guide.
We'll show A+B, A+C, B+C and a combined A+B+C overview with detailed harm-reduction pointers.
đ Also on prescription meds? Check the interactionMinimal interaction concerns - These substances typically have minimal negative interactions when used together. However, individual responses can vary based on dosage, tolerance, and personal health factors.
Harm Reduction Tips: Start with lower doses than you would take individually, stay hydrated, and have a sober friend present if trying this combination for the first time.
Moderate interaction concerns - These combinations may increase side effects or intensify experiences beyond comfortable levels. Requires careful dosing and monitoring.
Potential Concerns: Increased heart rate, blood pressure changes, anxiety, or unexpected psychological effects.
Harm Reduction Tips: Use significantly lower doses than you would take individually, wait longer between doses to assess effects, and avoid operating vehicles or machinery.
Significant interaction risk - These substances have known pharmacological interactions that can significantly increase risks. Should be approached with extreme caution.
Specific Risks: Potential for serotonin syndrome, respiratory depression, cardiovascular stress, or unpredictable psychological effects.
Harm Reduction Tips: Avoid this combination if possible. If combining, use minimal doses and have medical supervision available. Do not use alone.
High risk of severe harm or death - These combinations create a high risk of fatal overdose, severe medical complications, or permanent harm. Among the most dangerous drug combinations known.
Specific Life-Threatening Risks: Profound respiratory depression, cardiac arrest, seizure risk, extreme hyperthermia, or coma.
CRITICAL SAFETY INFORMATION: DO NOT COMBINE THESE SUBSTANCES. If accidental exposure occurs, call emergency services immediately.
Risk: đ: synergistic respiratory depression, blackouts, aspiration.
Risk: đâđ: hypertension, hyperthermia, arrhythmia, panic.
Risk: đ: masking sedation, dehydration, liver stress (cocaethylene with alcohol+cocaine).
Can potentiate intensity/anxiety. Delay THC until past peak; micro-puffs if at all.
Hypoxia/airway risk + amnesia. Sit down, supervised, fresh air breaks.