The Intoxication Equivalency of 11-Hydroxy-Δ-Tetrahydrocannabinol Relative to Δ-Tetrahydrocannabinol.

Δ-Tetrahydrocannabinol (THC) is a psychoactive phytocannabinoid found in the plant. THC is primarily metabolized into 11-hydroxy-Δ-tetrahydrocannabinol (11-OH-THC) and 11-nor-9-carboxy-Δ-tetrahydrocannabinol (COOH-THC), which may themselves be psychoactive. There is very little research-based evidence concerning the pharmacokinetics and pharmacodynamics of 11-OH-THC as an individual compound.