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Tetrahydrocannabinol
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Tetrahydrocannabinol
Tetrahydrocannabinol (THC) is a cannabinoid found in cannabis. It is the principal psychoactive constituent of Cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C21H30O2) describes multiple isomers, the term THC usually refers to the delta-9-THC isomer with chemical name (−)-trans-Δ9-tetrahydrocannabinol. It is a colorless oil.
THC, also known pharmaceutically as dronabinol, is used medically to relieve chemotherapy-induced nausea, HIV/AIDS-related anorexia, and symptoms of multiple sclerosis, including neuropathic pain and spasticity. It acts as a partial agonist at CB1 and CB2 cannabinoid receptors.
THC can be administered orally, inhaled, or transdermally, with bioavailability and onset varying by route, and is extensively metabolized in the liver to active and inactive metabolites before being excreted in feces and urine. Side effects include red eyes, dry mouth, drowsiness, memory impairment, anxiety, and, with chronic use, cannabinoid hyperemesis syndrome. While human overdose is rare, THC can interact with other drugs and has a complex pharmacokinetic profile.
THC is classified variably under international and U.S. law, with medical use approved in multiple countries. Research supports its effectiveness for spasticity, central pain, and some multiple sclerosis symptoms, though evidence for other neurological disorders is limited, and long-term high-dose exposure may carry uncertain toxicity risks.
THC, referred to as dronabinol in the pharmaceutical context, is approved in the United States as a capsule or solution to relieve chemotherapy-induced nausea and vomiting and HIV/AIDS-induced anorexia.
THC is an active ingredient in nabiximols, a specific extract of Cannabis that was approved as a botanical drug in the United Kingdom in 2010 as a mouth spray for people with multiple sclerosis to alleviate neuropathic pain, spasticity, overactive bladder, and other symptoms. Nabiximols (as Sativex) is available as a prescription drug in Canada. In 2021, nabiximols was approved for medical use in Ukraine.
Side effects of THC include red eyes, dry mouth, drowsiness, short-term memory impairment, difficulty concentrating, ataxia, increased appetite, anxiety, paranoia, psychosis (i.e., hallucinations, delusions), decreased motivation, and time dilation, among others.
Chronic usage of THC may result in cannabinoid hyperemesis syndrome (CHS), a condition characterized by cyclic nausea, vomiting, and abdominal pain that may persist for months to years after discontinuation.
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Tetrahydrocannabinol
Tetrahydrocannabinol (THC) is a cannabinoid found in cannabis. It is the principal psychoactive constituent of Cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C21H30O2) describes multiple isomers, the term THC usually refers to the delta-9-THC isomer with chemical name (−)-trans-Δ9-tetrahydrocannabinol. It is a colorless oil.
THC, also known pharmaceutically as dronabinol, is used medically to relieve chemotherapy-induced nausea, HIV/AIDS-related anorexia, and symptoms of multiple sclerosis, including neuropathic pain and spasticity. It acts as a partial agonist at CB1 and CB2 cannabinoid receptors.
THC can be administered orally, inhaled, or transdermally, with bioavailability and onset varying by route, and is extensively metabolized in the liver to active and inactive metabolites before being excreted in feces and urine. Side effects include red eyes, dry mouth, drowsiness, memory impairment, anxiety, and, with chronic use, cannabinoid hyperemesis syndrome. While human overdose is rare, THC can interact with other drugs and has a complex pharmacokinetic profile.
THC is classified variably under international and U.S. law, with medical use approved in multiple countries. Research supports its effectiveness for spasticity, central pain, and some multiple sclerosis symptoms, though evidence for other neurological disorders is limited, and long-term high-dose exposure may carry uncertain toxicity risks.
THC, referred to as dronabinol in the pharmaceutical context, is approved in the United States as a capsule or solution to relieve chemotherapy-induced nausea and vomiting and HIV/AIDS-induced anorexia.
THC is an active ingredient in nabiximols, a specific extract of Cannabis that was approved as a botanical drug in the United Kingdom in 2010 as a mouth spray for people with multiple sclerosis to alleviate neuropathic pain, spasticity, overactive bladder, and other symptoms. Nabiximols (as Sativex) is available as a prescription drug in Canada. In 2021, nabiximols was approved for medical use in Ukraine.
Side effects of THC include red eyes, dry mouth, drowsiness, short-term memory impairment, difficulty concentrating, ataxia, increased appetite, anxiety, paranoia, psychosis (i.e., hallucinations, delusions), decreased motivation, and time dilation, among others.
Chronic usage of THC may result in cannabinoid hyperemesis syndrome (CHS), a condition characterized by cyclic nausea, vomiting, and abdominal pain that may persist for months to years after discontinuation.
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