Hazardous Substances
Potassium Cyanide (KCN)
Street names: KCN, Cyanide salts
Overdose? Act now. Call emergency services — say "unresponsive, not breathing". Give naloxone for opioid-like signs. Hotlines
⚡What it does
- NONE — this is not a recreational drug. Blocks cellular oxygen use within minutes
⚠Key risks
- Lethal dose ~200–300 mg — death within minutes to an hour
- No antidote available outside hospital; hydrogen cyanide gas from acid contact
✚Overdose signs
- All exposure is poisoning: gasping, seizures, collapse, cardiac arrest
Category comparison — Hazardous Substances
| Substance | Class | Top risks | Street price |
|---|---|---|---|
| Potassium Cyanide (KCN) | Not a drug — regulated toxic chemical | Lethal dose ~200–300 mg — death within minutes to an hour; No antidote available outside hospital; hydrogen cyanide gas from acid contact | N/A — sometimes sold fraudulently as 'peaceful exit' scams |
| Air Duster (Computer Duster / Canned Air) | Household product — not a drug; no age restriction on purchase | SUDDEN SNIFFING DEATH — the most deadly inhalant: difluoroethane sensitizes the heart to adrenaline; a sudden fright, chase, or exertion triggers fatal cardiac arrest. First-time users die; Frostbite to lungs and airway from direct spray | $3–$8 per can at any electronics/office store |
| Gasoline / Petrol Huffing | Not a drug — fuel product | Extremely toxic hydrocarbons (benzene, toluene, xylene); Sudden sniffing death — cardiac arrest | Effectively free — siphoned fuel |
| Glue / Solvent Sniffing | Not drugs — adhesives and solvents | The CLASSIC youth inhalant — peak use age 14–15; Sudden sniffing death from cardiac arrest | $1–$5 per tube/can — pocket money prices |
| Refrigerant / Freon Huffing | Not a drug — HVAC refrigerant | EXTREMELY dangerous — refrigerant gases (difluoroethane, tetrafluoroethane) cause sudden cardiac death at high rates; Frostbite to airways | Stolen/siphoned — no price, high death cost |
| Benadryl (Diphenhydramine) Abuse | OTC — unrestricted purchase | DELIRIANT — not a fun hallucinogen: users can't distinguish hallucination from reality; Heart arrhythmia — anticholinergic load strains the heart; deaths documented | $3–$8 per box |
Street prices are regional estimates. Potency and cuts vary constantly.
?Frequently asked questions
What does Potassium Cyanide (KCN) look like?
White crystalline salt, almond-like odor when damp
What are the signs of a Potassium Cyanide (KCN) overdose?
All exposure is poisoning: gasping, seizures, collapse, cardiac arrest Call emergency services immediately.
How addictive is it?
Lethal dose ~200–300 mg — death within minutes to an hour Dependence can develop with regular use.