A 12-weeks Study to Evaluate Sulforaphane in Treatment of Autism Spectrum Disorder

In this proposed study, the investigators will evaluate the the efficacy, safety and related mechanism of sulforaphane in treatment of autism spectrum disorder (ASD). The study will recruit 120 ASD patients, then these patients will be randomized to sulforaphane group or placebo group (60 patients per arm) for 12 weeks clinic trial. Clinical efficacy and safety assessment will be done at screen/baseline, 4 week, 8 week and 12 week. The specific aims are to compare sulforaphane versus placebo on: 1) clinical core symptoms; 2) other behavioral problems and adaptive behaviors. Biological samples also will be collected, and stored to research related mechanisms.