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Effects of vigabatrin on cognitive function and mood when used as add-on therapy in patients with intractable
A M McGuire1, J S Duncan, M R Trimble
1Institute of Neurology, National Hospital, London, England.
Abstract:
Cognitive function and mood of patients with epilepsy who received 2 g/day vigabatrin (GVG) in addition to their usual antiepileptic drugs (AEDs) was assessed on two occasions: before start of treatment (baseline) and 4 weeks after start of treatment. A battery of selected psychological tasks measuring attention, mental speed, motor speed, central cognitive processing, and perceptuomotor performance was used, along with standardized, objective mood assessments. A comparison group (n = 15) of patients receiving stable medication was also tested to evaluate practice effects of the psychometric tests. Administration of 2 g/day GVG significantly decreased response time on a test of central cognitive processing ability (arithmetic). No adverse effect was noted on any other test of cognitive function or mood.