An anticholinesterase agent with nonspecific central nervous system stimulatory effects; used in early stages of Alzheimer disease.
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tac·rine 'tak-.rēn, -.rīn n an anticholinesterase that is administered in the form of its hydrochloride C13H14N2·HCl and is used esp. in the palliative treatment of cognitive deficits in learning, memory, and mood associated with Alzheimer's disease called also tetrahydroaminoacridine, THA see COGNEX
Medical dictionary. 2011.