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Neuropsychological test performance in healthy elderly volunteers before and after donepezil administration: a randomized, controlled study.
Beglinger LJ, Tangphao-Daniels O, Kareken DA, Zhang L, Mohs R, Siemers ER. Beglinger LJ, et al. Among authors: siemers er. J Clin Psychopharmacol. 2005 Apr;25(2):159-65. doi: 10.1097/01.jcp.0000155822.51962.b4. J Clin Psychopharmacol. 2005. PMID: 15738747 Clinical Trial.

After 2 weeks of donepezil treatment (day 28), subjects in the donepezil group performed slightly but significantly worse on 2 tests of speed, attention, and short-term memory (P < 0.05) compared with the placebo group. No significant improvement in performance was pres

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After 2 weeks of donepezil treatment (day 28), subjects in the donepezil group performed slightly but significantly worse on 2 tests of spee …