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By Mayo Clinic staffChelation therapy is a dose of a medication called ethylenediaminetetraacetic acid (EDTA), delivered by an intravenous (IV) line. This medication seeks out and binds to minerals in your bloodstream. Once the medication binds to the minerals, it creates a compound that leaves your body in your urine.
Chelation therapy has been used as a proven treatment for lead or mercury poisoning. Although it hasn't been proved to work for heart disease, some doctors think that chelation therapy could begin to reverse heart disease by binding to the calcium in the plaques clogging your arteries and sweeping it away.