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tetrahydrocannabinol
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tetrahydrocannabinol

drug
Also known as: THC
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Related Topics:
marijuana
hemp
cannabis
hashish
cannabis

News •

Retailers brace as hemp-derived THC products ban nears law in Texas • May 23, 2025, 4:37 AM ET (CBS)
Eleven Elementary Students Hospitalized After Eating 'Drug-Laced Cookies' • May 14, 2025, 7:13 AM ET (Newsweek)
Alcohol use is declining. THC is swooping in • May 9, 2025, 11:10 PM ET (CNN)
The chemistry of marijuana
The chemistry of marijuanaLearn about the chemistry of marijuana and how its potency and safety is determined.
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tetrahydrocannabinol (THC), active constituent of marijuana and hashish that was first isolated from the Indian hemp plant (Cannabis sativa) and synthesized in 1965. For the effects of the drug, see marijuana.

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Adam Augustyn.
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