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Hazardous Substances

Wild Lettuce (Lactuca virosa)

Street names: Lettuce opium, Lactucarium, Opium lettuce, Acrid lettuce

⚡What it does

  • Mild sedative bitter (lactucin/lactucopicrin) — the 19th century's patent-medicine 'lettuce opium' is 99% placebo
  • Sold as a legal opioid alternative

⚠Key risks

  • The marketing vastly exceeds the pharmacology — but the placebo works on desperation
  • Wild-harvest misidentification risk (lookalike plants)
  • The real danger: people in opioid withdrawal wasting time on inert herbs instead of treatment
  • Mild allergic reactions

✚Overdose signs

  • None documented at sane doses

Category comparison — Hazardous Substances

SubstanceClassTop risksStreet price
Wild Lettuce (Lactuca virosa)Unregulated herb; legalThe marketing vastly exceeds the pharmacology — but the placebo works on desperation; Wild-harvest misidentification risk (lookalike plants)$8–$20 per ounce herb
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 Wild Lettuce (Lactuca virosa) look like?

Dried herb or sticky 'lactucarium' extract from tall wild lettuce; smoked or brewed

What are the signs of a Wild Lettuce (Lactuca virosa) overdose?

None documented at sane doses Call emergency services immediately.

How addictive is it?

The marketing vastly exceeds the pharmacology — but the placebo works on desperation 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.