>>6283249 (lb)
I've read about it. It's useful for leaching heavy metals out of the body.
I'd done some topical reading on it because a member of my family was showing possible signs of heavy metal poisoning. It ended up being a treatable with standard issue allegry medication, so it was never pursued.
From what I've read, it is an invasive treatment that should only be done under very controlled conditions by personnel trained in dealing with ICU level ad-hoc needs..
It's pretty much comparable to working on your car's drivetrain while the car is running and driving down the street..
https://en.wikipedia.org/wiki/Chelation_therapy
https://draxe.com/chelation-therapy/