Coordination chemistry plays a vital role in medicine through Chelation Therapy.

• EDTA (Ethylenediaminetetraacetate) is a hexadentate ligand that can 'wrap' around metal ions.
• It forms extremely stable, water-soluble complexes with heavy metals like Lead ($P{b}^{2+}$), Mercury ($H{g}^{2+}$), and Arsenic.
• Once bound by EDTA, these toxic metals can no longer interact with biological enzymes and are safely excreted from the body via urine.