Autistic treatments

How can I get my autistic son (19) into therapies, such as chelation, secretin, hyperbaric therapies, etc...?

[MJIthewriter]

There's no magic cure for autism.

Chelation treatment done wrong can be fatal. Make sure they know what they are doing. I wish I remembered what I read a while ago. Perhaps you can search through the archives to see if I made any mention about what kind of chelation treatment is not safe.
Done correctly could also deplete the body of certain vitamins. Make sure to supplement those vitamins.

I would not recommend this kind of treatment unless you've had your son tested for mercury poisoning and came up with a positive result.  If the test comes up negative, then you may be wasting money, time, and putting your son's health at risk. If he does have poisoning, then you definitely want to do a thorough search and read up on the pros and cons, as well as what to look for and avoid. That will give you a better starting point.