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THC was reported to have a fast initial half-life of 6 minutes and a long terminal half-life of 22 hours in a population pharmacokinetic study. [23] [33] Conversely, the Food and Drug Administration label for dronabinol reports an initial half-life of 4 hours and a terminal half-life of 25 to 36 hours. [22]
Δ-8-tetrahydrocannabinol (delta-8-THC, [a] Δ 8-THC) is a psychoactive cannabinoid found in the cannabis plant. [1] It is an isomer of delta-9-tetrahydrocannabinol (delta-9-THC, Δ 9 -THC), the compound commonly known as THC, with which it co-occurs in hemp ; natural quantities of ∆ 8 -THC found in hemp are low.
11-COOH-THC is a Schedule 8 prohibited substance in Western Australia under the Poisons Standard (July 2016). [15] A schedule 8 substance is a controlled Drug – Substances which should be available for use but require restriction of manufacture, supply, distribution, possession and use to reduce abuse, misuse and physical or psychological dependence.
Like Δ 9-THC, 11-hydroxy-THC is a partial agonist at the cannabinoid receptor CB 1, but with significantly higher binding affinity (K i = 0.37 nM compared to Δ 9-THC K i = 35 nM). [7] With respect to cAMP inhibition at CB 1 it displays a similar efficacy to that of Δ 9 -THC (EC 50 = 11 nM vs. EC 50 = 5.2 nM, respectively), but a lower ...
THC, the main psychoactive component of cannabis, may only be detectable in saliva and oral fluid for 2–24 hours in most cases. [8] [9] The main metabolite excreted in the urine is 11-Nor-9-carboxy-THC, also known as THC-COOH. Most cannabis drug tests yield a positive result when the concentration of THC-COOH in urine exceeds 50 ng/mL. [10]
Absorption half-life 1 h, elimination half-life 12 h. Biological half-life (elimination half-life, pharmacological half-life) is the time taken for concentration of a biological substance (such as a medication) to decrease from its maximum concentration (C max) to half of C max in the blood plasma.
Tetrahydrocannabiphorol (THCP) is a potent phytocannabinoid, a CB 1 and CB 2 receptor agonist which was known as a synthetic homologue of tetrahydrocannabinol (THC), [1] but for the first time in 2019 was isolated as a natural product in trace amounts from Cannabis sativa.
There is an important relationship between clearance, elimination half-life and distribution volume. The elimination rate constant of a drug K e l {\displaystyle K_{el}} is equivalent to total clearance divided by the distribution volume