Red meat 3x a day
Niacin, the flushing kind. Enough to make you flush, at least once a day.
Distilled water, chug that shit.
Piracetam or any other nootropic similar.
Choline.
A glass of decent quality vodka once a day, accompanied with a prayer to a saint of your choice.
That should get you grounded.
Avoid leafy greens in large quantities, pork, chicken, hamster, dog, as well. Racoon and bobcat are ok. Bear meat is even better but hard to come by.
No fruit. Pretty much avoid sugar altogether if you can.
Curious as to why you believe you build up heavy metal toxicity. This kind of belief is usually a sign of some other deep problem not being faced. People start talking about "toxins" in their bodies as a way of generalizing usually some self destructive behavior they refuse to identify and correct.
Just remember the red meat, niacin, and vodka and you should be good in a couple of months.