Abstract
This randomized double blind, placebo-controlled crossover study investigated the antidyskinetic effects of levetiracetam in Parkinson's disease. Sixteen participants with levodopa-induced dyskinesia were enrolled. Hourly videotaped dyskinesia assessments scored by the Goetz method and hourly Unified Parkinson's Disease Rating Scale motor subscale scoring were conducted on 1 day at the end of each treatment period. Dyskinesia was slightly less on placebo (P = .26). Patient diary records also showed less dyskinesia on placebo (P = .10). Parkinsonism was a little worse on levetiracetam, at borderline statistical significance (P = .05). Levetiracetam was well tolerated at doses up to 2000 mg per day, but we did not detect any antidyskinetic properties.
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