NCI Drug Dictionary
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A partial agonist of the nicotinic acetylcholine receptor (nAChR) subtype alpha4beta2. Nicotine stimulation of central alpha4beta2 nAChRs located at presynaptic terminals in the nucleus accumbens causes the release of the neurotransmitter dopamine, which may be associated with the experience of pleasure; nicotine addiction constitutes a physiologic dependence related to this dopaminergic reward system. As an AChR partial agonist, varenicline attenuates the craving and withdrawal symptoms that occur with abstinence from nicotine but is not habit-forming itself. Check for active clinical trials or closed clinical trials using this agent. (NCI Thesaurus)
|US brand name:||Chantix|
|Foreign brand name:||Champix|
|Chemical structures:||6,10-methano-6H-pyrazino[2,3-h]benzazeprine, 7,8,9,10-tetrahydro, (2R,3R)-2,3-dihydroxybutanedioate (1:1) |