In 2003, we were a site that participated in conducting a clinical trial for Secretin. The purpose of the study was to determine safety and efficacy of Secretin versus placebo in the treatment of Autism symptoms. 

Unfortunately, the study results found that there was no difference in symptom change between children on Secretin and those on placebo.   Here’s an article on the study results.

http://query.nytimes.com/gst/fullpage.html?res=9C00E2D81231F935A35752C0A9629C8B63

There currently is no FDA approved medication for the treatment of Autism.  However, currently enrolling clinical trials for Autism can be found here:

http://clinicaltrials.gov/ct2/results?term=autism