Intravenous chelation therapy is a method whereby specific substances are introduced into the blood intended to remove excess heavy metals and/or other substances deemed to be potentially harmful from the body. The basic principle of chelation therapy involves introducing a particular substance directly into the bloodstream in order to bind metals or minerals and help to shuttle them out of the body when they are found in excess. A classic example of using a powerful chelating agent is ethylene diamine tetra-acetic acid (EDTA). EDTA is a synthetic amino acid and edible preservative used in various foods, that can bind and remove from the circulation various metals like iron and copper.