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J Affect Disord. 1979 Dec;1(4):227-35.

Evidence that piracetam has an anxiolytic action.

Abstract

In the social interaction test of anxiety Piracetam (100 mg/kg) had an anxiolytic profile very similar to that seen after 5 days of administration of chlordiazepoxide (5 mg/kg). Piracetam (50-300 mg/kg) produced no signs of sedation and it was therefore suggested that it might be a non-sedative anxiolytic drug. Piracetam (100 mg/kg) produced significantly higher cortical concentrations of 5-hydroxytryptamine and lower concentrations of 5-hydroxyindoleacetic acid, indicating a reduced 5-HT turnover. There were no drug-induced changes in noradrenaline or dopamine in any brain region, either with or without pretreatment with alpha-methylparatyrosine. The cortical concentrations of 7 amino acids were measured and were unchanged by treatment with Piracetam.

PMID:
95599
[Indexed for MEDLINE]

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