Read this article by Robert Kennedy Jr.
"Senate Majority Leader Bill Frist has buried a provision in the "Protecting America in the War on Terror Act" to insulate the pharmaceutical industry from liability for venal actions that may have poisoned an entire generation of Americans."
BELLACIAO - Playing Politics at Kids's Expense
He talks about the links between vaccinations which contain thimerosal (mercury) and the epidemic of neurological disorders like autism and ADHD.
"Instead of demanding the immediate removal of Thimerosal from all vaccines, and making the drug industry help defray the public and private costs of caring for injured children, Frist’s bill would give the industry a free ride at public expense."
"Autistic children have been shown to have higher mercury loads than nonautistics, and there have been reports of significant improvements in some brain-injured children by removing mercury from their bodies."

In another study released this month researchers have found that autistic children have levels of glutathione (antioxidant) in their blood, significantly below that of "normal" children.
Children with autism have a severely abnormal metabolic profile

Antioxidants are crucial in removing heavy metals like mercury from our bodies

So what would I do, I would take the best antioxidant I could, one that was clinically tested to raise glutathione levels in human blood tests and one that is tested for both water and fat soluable ORAC values.
Complete Immune and Antioxidant Support