The gold standard for heavy metal detox, particularly mercury, which is the most poisonous of all the heavy metals, is the Andy Cutler Protocol.

It never got that popular because it’s slow, but it’s safe and it works, though it must be done exactly as prescribed (per the half-life of the chelators).

And you must remove (with the proper procedure) any amalgam (mercury) fillings via a dentist that knows how to do it safely prior to starting it.