Drug Combination Chart
Interactive harm-reduction reference chart showing which drug & substance combinations are low risk, dangerous, or potentially deadly.
An interactive harm-reduction reference chart displaying known interaction risks between 14 common substances including alcohol, cannabis, MDMA, opioids, benzodiazepines, stimulants, psychedelics, and more. Each combination is color-coded by severity — from Low Risk to Potentially Deadly. All data is displayed for educational and harm-reduction purposes only. Nothing on this page constitutes medical advice.
How to Use Drug Combination Chart
Browse the interactive matrix to find any two substances. Click any colored cell to read a detailed description of that combination's risks, effects, and warnings. Use the search bar to filter the chart by substance name. A color-coded legend explains each risk level.
Features
- ✓ 14 substances including alcohol, cannabis, MDMA, opioids, benzos, amphetamines, psychedelics, GHB, ketamine, nitrous, caffeine, SSRIs, and MAOIs
- ✓ Color-coded severity: Low Risk, Caution, Unsafe, Dangerous, and Deadly
- ✓ Click any cell for a detailed interaction description
- ✓ Search/filter by substance name to narrow the chart
- ✓ Fully client-side — no data sent to any server
- ✓ Prominent educational disclaimer on every view
Use Cases
- → Harm reduction education and awareness
- → Pharmacology and nursing students
- → Drug safety research and reference
- → Healthcare professional quick reference