This is the question posed by Prometheus over at A Photon in the Darkness blog. He blogged this in response to two papers recently published:
The short answer is, yes, DMSA is safe and effective. That is, if you have lead poisoning. It is likely safe and effective for other heavy metal exposures as well.
As far as a treatment for autism, well, that is another story entirely. The study authors claim that oral DMSA is “…possibly helpful in reducing some of the symptoms of autism in those children”.
Take a look at Prometheus’ analysis of the study. It is very clear that the study authors used, well, curious methodology. Beyond that, their conclusions are not really supported by their own data.
Left Brain Right Brain 
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