Drug Harm Reduction Guide
This page provides strictly informational harm reduction content based on evidence-based public health research. It does not endorse or encourage drug use. Content is provided to reduce risks for individuals who have already made personal choices about substance use. Seek professional medical advice for personal health decisions.
Harm reduction is a public health approach that aims to reduce the negative consequences associated with drug use without necessarily requiring abstinence. Organisations including the World Health Organisation, Drug Policy Alliance, and DanceSafe publish evidence-based harm reduction guidance.
Emergency Response — If Someone Is Overdosing
🚨 OPIOID OVERDOSE — Signs & Response
Signs: Unresponsive, very slow or stopped breathing (fewer than 1 breath per 5 seconds), blue or grey lips and fingertips, pinpoint pupils, gurgling or snoring sounds.
Immediate response:
- Call emergency services (911 / 999 / 112) — do this first
- Administer naloxone (Narcan) if available — nasal spray or injection
- Place in recovery position (on their side) to prevent choking
- Perform rescue breathing if they are not breathing
- Stay with them — naloxone wears off in 30-90 minutes and re-dosing may be needed
Naloxone (Narcan) is available OTC at many pharmacies. GetNaloxoneNow.org provides access information by location.
🚨 STIMULANT OVERDOSE — Signs & Response
Signs: Chest pain, irregular heartbeat, extreme agitation or confusion, very high temperature (skin hot and dry), seizures, loss of consciousness.
Immediate response: Call emergency services. Move to a cool environment. Do not restrain. Do not give water if unconscious. Monitor airway.
🚨 BENZODIAZEPINE OVERDOSE — Signs & Response
Signs: Severe drowsiness, slurred speech, confusion, slow shallow breathing, loss of coordination.
Response: Call emergency services. Keep airway open. If mixed with opioids, administer naloxone. Benzodiazepine overdose alone is rarely fatal — combinations with opioids or alcohol are the primary danger.
Core Harm Reduction Principles
Testing Your Substances
- Fentanyl test strips: Detect fentanyl contamination in any drug sample. BTNX fentanyl strips are widely available. A positive result (1 line) means fentanyl is present. btnx.com
- Reagent test kits: Chemical tests that produce colour reactions identifying compounds. Marquis, Mecke, Mandelin, and Simon's reagents identify different substance classes. Available from Bunk Police and DanceSafe.
- Drug checking services: Some jurisdictions offer free drug checking services that use spectrometry to identify compounds in samples. Energy Control offers postal drug checking in some regions.
General Safety Practices
- Start low, go slow: Unknown purity makes every batch unpredictable. Begin with a fraction of the intended dose and wait for effects before redosing.
- Never use alone: Have a sober person present or use a buddy system. If alone, Never Use Alone operates a phone service that will call emergency services if you become unresponsive.
- Avoid combinations: Polydrug use exponentially increases overdose risk. Opioids + benzodiazepines, opioids + alcohol, and stimulants + depressants are the most lethal combinations.
- Set and setting: Mental state and environment affect drug experience. Avoid use when in psychological distress or unfamiliar environments.
- Stay hydrated (appropriately): Stimulants and empathogens require adequate (not excessive) fluid intake. Overhydration from MDMA can also be fatal — no more than 500ml per hour of moderate activity.
Substance-Specific Harm Reduction
Opioids (Heroin, Fentanyl, Prescription Opioids)
Primary risks: Respiratory depression, overdose, dependence, injection-related infections.
Key rules: Test for fentanyl in every batch — fentanyl contamination is widespread across the drug supply. Carry naloxone. Never use alone. Avoid mixing with other CNS depressants. Tolerance drops rapidly after abstinence — never resume at prior dose after a break.
MDMA / Ecstasy
Primary risks: Hyperthermia, hyponatremia (overhydration), serotonin syndrome, cardiac arrhythmia, hepatotoxicity with regular use.
Key rules: Test with Marquis reagent (should turn purple/black). Limit to 1-2 uses per month maximum. Take breaks every 90 minutes, rest and rehydrate. Avoid SSRIs combination (serotonin syndrome risk). Start with low dose (75-100mg).
Resources: DanceSafe, Isomer Design
Cocaine / Crack Cocaine
Primary risks: Cardiovascular events, vasoconstriction, nasal septum damage from insufflation, dependence, fentanyl contamination.
Key rules: Test for fentanyl — contamination is increasingly common. Avoid use with alcohol (creates cocaethylene, more cardiotoxic). Do not use with other stimulants. Use separate snorting equipment to avoid disease transmission. Rinse nasal passages after use.
Methamphetamine
Primary risks: Cardiovascular strain, hyperthermia, psychosis with heavy use, dental damage, strong psychological dependence.
Key rules: Test with Marquis reagent (should turn orange). Limit frequency severely. Stay cool in warm environments. Eat and sleep regularly between uses. Monitor for paranoia or psychotic symptoms as warning signs of excessive use.
Cannabis
Primary risks: Cannabinoid hyperemesis syndrome, temporary psychosis in high doses or high-THC products, psychological dependence, impaired cognition with daily use.
Key rules: Start with low doses, particularly for edibles (onset delayed 1-2 hours). High-potency concentrates carry higher psychosis risk. Avoid use under 25 in developing brains where possible. Do not drive.
Psychedelics (LSD, Psilocybin, DMT, Mescaline)
Primary risks: Psychological crisis, HPPD (hallucinogen persisting perception disorder), dangerous behaviour during impairment.
Key rules: Set and setting are critical. Have a trusted sober guide (trip sitter) present. Avoid use with psychiatric history of psychosis. Do not combine with lithium (seizure risk). Test LSD with Ehrlich reagent (purple indicates indole alkaloid). MAPS ZENDO Project provides crisis support.
Benzodiazepines (Xanax, Valium, Etizolam, Clonazepam)
Primary risks: Respiratory depression in combination with other depressants, severe physical dependence, withdrawal seizures (potentially fatal).
Key rules: Never combine with opioids or alcohol. Physical dependence develops quickly. Do not stop abruptly after regular use — benzodiazepine withdrawal can be fatal. Taper under medical supervision. BenzoBuddies peer support community.
Ketamine
Primary risks: K-hole dissociation, urinary tract damage with heavy regular use (ketamine cystitis), bladder destruction with chronic use.
Key rules: Limit use to once per week maximum. Monitor for urinary symptoms — burning urination is an early warning sign. Stay seated or lying down — ketamine affects motor control severely. Do not combine with alcohol or CNS depressants.
Resources and Support
- DanceSafe — Drug testing kits, harm reduction education
- TripSit — 24/7 drug information chat and combination checker
- Never Use Alone — Phone standby service for solo drug use
- GetNaloxoneNow.org — Naloxone access directory
- SAMHSA Helpline — 1-800-662-4357 (US)
- Talk to Frank — Drug information and support (UK)
- PsychonautWiki — Comprehensive substance database and harm reduction