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Efficacy and tolerance of vinpocetine in ambulant patients suffering from mild to moderate organic psychosyndromes.


Hindmarch I, Fuchs HH, Erzigkeit H




Int Clin Psychopharmacol


The efficacy and tolerance of orally administered vinpocetine was investigated in patients suffering from mild to moderate organic psychosyndromes including primary dementia. Two hundred and three patients were included in a placebo-controlled, randomized double- blind, multicentre trial and received every day for 16 weeks either: 3 x 10 mg doses of vinpocetine, 3 x 20 mg doses of vinpocetine, or 3 x placebo. Patients were assessed on ratings of clinical global impression, cognitive performance and on measures of the quality of life including depressive illness. There were no clinically relevant side-effects reported and the frequencies of adverse events between patients treated with vinpocetine (30 mg or 60 mg) and placebo were comparable. Statistically significant improvements were found in favour of both active treatment groups compared to placebo in both confirmatory evaluations of efficacy of treatment: the "Global Improvement" (on the CGI scale) and cognitive performance (SKT). Vinpocetine was also superior to placebo in ratings of the "severity of illness". This study demonstrates the usefulness and efficacy of vinpocetine in the management of patients with moderate organic psychosyndromes. An apparently greater therapeutic efficacy of 3 x 10 mg vinpocetine compared with the higher vinpocetine dosage is statistically not significant.

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