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Double-blind, placebo-controlled trial of risperidone plus amantadine in children with autism: a 10-week randomized study.

Author(s): Mohammadi MR(1), Yadegari N, Hassanzadeh E, Farokhnia M, Yekehtaz H, Mirshafiee O, Akhondzadeh S.

Affiliation(s): Author information: (1)Psychiatric Research Center, Roozbeh Hospital, Tehran University of Medical Sciences, Tehran, Iran.

Publication date & source: 2013, Clin Neuropharmacol. , 36(6):179-84

OBJECTIVE: This study aimed to investigate the effect of adding amantadine to risperidone for treatment of autism. METHODS: Forty outpatients aged 4 to12 years, who were diagnosed with autism spectrum disorders based on the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision criteria, were assigned to this double-blind clinical trial. The subjects were divided randomly into 2 groups. One group received risperidone plus amantadine, and the other group received risperidone plus placebo. The dose of risperidone was titrated between 1 and 2.0 mg/d, and the dose of amantadine was 100 or 150 mg/d for patients less than 30 kg or more than 30 kg, respectively. The patients were assessed using the Aberrant Behavioral Checklist-Community (ABC-C) and adverse effects checklist as well as clinical global impression-improvement (CGI-I) at2 checkpoints of 5-week intervals after the baseline. Informed consentwas obtained from the parents of each participant. RESULTS: Among ABC-C subscales, Hyperactivity and Irritability showed significantly greater reduction in the amantadine group than the placebo group. There was no significant difference in adverse effects between the 2 groups. The CGI-I scores show significant improvement in the amantadine group compared to the placebo group. CONCLUSIONS: The present study suggests that amantadine may be a potential adjunctive treatment strategy for autism and it was generally well tolerated.

Page last updated: 2014-11-30

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