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Hazardous Substances

Paracetamol / Acetaminophen Overdose

Street names: Paracetamol, Acetaminophen, Tylenol, Panadol, APAP

⚡What it does

  • Pain and fever relief at normal doses; no high

⚠Key risks

  • Leading cause of acute liver failure in the US, UK and Australia — the lethal dose is only ~2–3× the max daily dose
  • Hidden in combination products — people double-dose without knowing
  • Staggered overdoses (a few extra tablets for days) are just as deadly

✚Overdose signs

  • Often NOTHING for 24–48 h, then: nausea, right-side abdominal pain
  • Yellowing skin/eyes (jaundice)
  • Confusion — by then the liver is failing; NAC antidote works only if given early

Category comparison — Hazardous Substances

SubstanceClassTop risksStreet price
Paracetamol / Acetaminophen OverdoseOTC — the danger is the doseLeading cause of acute liver failure in the US, UK and Australia — the lethal dose is only ~2–3× the max daily dose; Hidden in combination products — people double-dose without knowing~$3–$8 per pack
Potassium Cyanide (KCN)Not a drug — regulated toxic chemicalLethal dose ~200–300 mg — death within minutes to an hour; No antidote available outside hospital; hydrogen cyanide gas from acid contactN/A — sometimes sold fraudulently as 'peaceful exit' scams
Air Duster (Computer Duster / Canned Air)Household product — not a drug; no age restriction on purchaseSUDDEN 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 HuffingNot a drug — fuel productExtremely toxic hydrocarbons (benzene, toluene, xylene); Sudden sniffing death — cardiac arrestEffectively free — siphoned fuel
Glue / Solvent SniffingNot drugs — adhesives and solventsThe CLASSIC youth inhalant — peak use age 14–15; Sudden sniffing death from cardiac arrest$1–$5 per tube/can — pocket money prices
Refrigerant / Freon HuffingNot a drug — HVAC refrigerantEXTREMELY dangerous — refrigerant gases (difluoroethane, tetrafluoroethane) cause sudden cardiac death at high rates; Frostbite to airwaysStolen/siphoned — no price, high death cost
Street prices are regional estimates. Potency and cuts vary constantly.

?Frequently asked questions

What does Paracetamol / Acetaminophen Overdose look like?

The world's most common painkiller — in everything from Tylenol to cold remedies to Percocet

What are the signs of a Paracetamol / Acetaminophen Overdose overdose?

Often NOTHING for 24–48 h, then: nausea, right-side abdominal pain; Yellowing skin/eyes (jaundice); Confusion — by then the liver is failing; NAC antidote works only if given early Call emergency services immediately.

How addictive is it?

Leading cause of acute liver failure in the US, UK and Australia — the lethal dose is only ~2–3× the max daily dose Dependence can develop with regular use.

🔗Sources & further reading

Facts on this page are compiled from these primary sources. External links open in a new tab.