ChemBase — Evidence-Based Harm Reduction Drug Reference
ChemBase is a free, evidence-based harm reduction reference providing safety information for recreational substances. JavaScript is required for the interactive features.
Substances Covered
- MDMA — dosage, organ effects, interactions, detection, withdrawal
- Cannabis (Weed) — dosage, organ effects, interactions, detection, withdrawal
- LSD — dosage, organ effects, interactions, detection
- Psilocybin Mushrooms — dosage, organ effects, interactions, detection
- Cocaine — dosage, organ effects, interactions, detection, withdrawal
- Ketamine — dosage, organ effects, interactions, detection, withdrawal
- Opioids — dosage, organ effects, interactions, detection, withdrawal
- Alcohol — dosage, organ effects, interactions, detection, withdrawal
- Methamphetamine — dosage, organ effects, interactions, detection, withdrawal
- Benzodiazepines — dosage, organ effects, interactions, detection, withdrawal
- Amphetamine — dosage, organ effects, interactions, detection, withdrawal
- GHB / GBL — dosage, organ effects, interactions, detection, withdrawal
- DMT / Ayahuasca — dosage, organ effects, interactions, detection
- 2C-B — dosage, organ effects, interactions, detection
- DXM (Dextromethorphan) — dosage, organ effects, interactions, detection
- Kratom — dosage, organ effects, interactions, detection, withdrawal
- Nicotine / Tobacco — dosage, organ effects, interactions, detection, withdrawal
- Nitrous Oxide — dosage, organ effects, interactions, detection
- Poppers — dosage, organ effects, interactions, detection
- PCP — dosage, organ effects, interactions, detection, withdrawal
- Mephedrone / Cathinones — dosage, organ effects, interactions, detection
Features
Interactive organ impact body map, dosage guides by route of administration, drug interaction checker, detection timeline calendars, withdrawal symptom profiles, cessation support guidance, and emergency protocols.
Disclaimer: This is harm reduction information only. Not medical advice. Call 911 for emergencies.