Autism / Autism Spectrum Support Group
Autism is classified as a neurodevelopmental disorder which manifests itself in markedly abnormal social interaction, communication ability, patterns of interests, and patterns of behavior. Although the specific etiology of autism is unknown, many researchers suspect that autism results from genetically mediated vulnerabilities to environmental triggers.
But here's a link I found that recommends great caution: http://blogs.discovermagazine.com/notrocketscience/2010/11/29/the-dark-side-of-oxytocin-much-more-than-just-a-love-hormone/
Still, it sounds like it may be useful in specific circumstances.
http://www.sciencedaily.com/releases/2013/07/130718101409.htm
be very careful on meds and what you hear works and what doesn't. a lot of these things are just that, a fad. I strongly urge you to contact your local school system as he should be eligible for early intervention services.