Drug Harm Reduction Guide — Safety Information for All Substances 2026

UNIVERSAL HARM REDUCTION PRINCIPLES

✖ Never Use Alone

The majority of fatal overdoses occur when no one is present to administer naloxone or call emergency services. Inform a trusted person. Use Never Use Alone hotline (US): 1-800-484-3731 — a volunteer stays on the line and calls 911 if you become unresponsive.

📈 Test Your Substances

Fentanyl contamination is documented across virtually all drug supply categories. Fentanyl test strips detect contamination in any substance. Reagent test kits (Marquis, Mecke, Mandelin, Simon's) identify substance identity and common adulterants. Never skip testing.

⏰ Start Low, Go Slow

Tolerance varies dramatically between individuals and changes over time. Potency varies between batches. Start with a fraction of the intended dose and wait for effects to peak before redosing. This rule prevents the majority of accidental overdoses from dose miscalculation.

💋 Avoid Combinations

Polydrug use is the leading cause of overdose deaths. Depressants combined with other depressants (opioids + benzos + alcohol) cause respiratory failure. Stimulants combined with other stimulants cause cardiac events. TripSit's drug interaction checker is a free, research-based reference tool.

🚑 Carry Naloxone

Naloxone (Narcan) reverses opioid overdose within minutes. It is available without prescription in most US states and many countries. Every person who uses opioids — or knows someone who does — should carry naloxone and know how to administer it. It cannot harm a non-opioid overdose victim.

🔒 Know Your Rights

Many jurisdictions have Good Samaritan laws protecting people who call 911 during an overdose emergency from drug-related prosecution. Know your local laws. Saving a life is always more important than legal concerns — call emergency services without hesitation.

SUBSTANCE-SPECIFIC SAFETY INFORMATION

HIGH OVERDOSE RISK

Opioids

Include heroin, fentanyl, oxycodone, morphine, codeine. Signs of overdose: slow/stopped breathing, blue lips, pinpoint pupils, unresponsive. Administer naloxone immediately. Call 911. Put person in recovery position. Fentanyl may require multiple naloxone doses.

HIGH OVERDOSE RISK

Benzodiazepines

Include diazepam (Valium), alprazolam (Xanax), clonazepam. Overdose risk multiplies dramatically in combination with opioids or alcohol. Signs: extreme drowsiness, confusion, slurred speech, respiratory depression. No reversal agent for benzo overdose — supportive care only.

MODERATE RISK

MDMA / Ecstasy

Risks include hyperthermia (overheating), hyponatremia (over-hydration), and serotonin syndrome. Test all pills — MDMA tablets are frequently adulterated with methamphetamine or cathinones. Stay hydrated but not excessively. Take breaks from dancing. Avoid combinations with SSRIs or MAOIs.

MODERATE RISK

Cocaine / Crack

Cardiovascular risk is the primary concern — cocaine raises heart rate and blood pressure. Risk increases significantly with physical exertion, pre-existing heart conditions, and combination with alcohol (produces cocaethylene, more cardiotoxic). Fentanyl contamination documented in cocaine supply.

HIGH RISK

Methamphetamine

Risks include hyperthermia, cardiovascular strain, psychosis with heavy use, and severe addiction potential. Methamphetamine is frequently found in counterfeit pills marketed as other substances. Test all unverified pills. Avoid use if you have heart conditions, high blood pressure, or mental health vulnerabilities.

LOWER RISK

Cannabis

Fatal overdose is not documented with cannabis alone. Main risks: acute anxiety/panic attacks (especially with edibles or concentrates), psychosis risk with heavy use in predisposed individuals, impaired driving. Start with low doses of edibles (5mg THC). Effects can take 2 hours to fully manifest.

MODERATE RISK

Psychedelics (LSD, Psilocybin)

No documented fatal physical overdose from LSD or psilocybin alone. Risks are primarily psychological: severe anxiety, dissociation, and in rare cases, lasting perceptual disturbances. Set and setting matter enormously. Have a trusted sober guide. Avoid if you have personal or family history of psychosis.

HIGH RISK

GHB / GBL

GHB has one of the narrowest therapeutic windows of any drug — the difference between a recreational dose and an overdose is small. Combining with alcohol is extremely dangerous and responsible for most GHB deaths. Never use while alone. Dose precisely with a measured syringe. Never redose without timing.

MODERATE RISK

Ketamine

Risks include k-hole dissociation (immobilizing dose), bladder damage from chronic use (ketamine-induced uropathy), and accidents during dissociative episodes. Bladder damage can be permanent and severe with frequent use. Allow full recovery between sessions. Never drive while under the influence.