Category: alkaloid
Aliases: Δ9-tetrahydrocannabinol, Delta-9-THC
Primary psychoactive phytocannabinoid — partial CB1 agonist (CNS) + CB2 partial agonist (peripheral). CB1 in nucleus accumbens / PFC drives the euphoria + cognitive effects; CB1 in brainstem is sparse, explaining the very low overdose-respiratory-depression risk.
PO: 25h