Which chelating ligand is effective in removing excess copper and iron from the body?

D-penicillamine is an effective chelating ligand specifically utilized in the treatment of copper and iron overload in the body. It is a derivative of penicillin and works by forming stable complexes with metal ions, which facilitates their excretion from the body through urine. This process is particularly important in conditions such as Wilson's disease, where excess copper accumulation can lead to severe health issues.

D-penicillamine's ability to bind to copper and promote its removal makes it a preferred choice in addressing toxicity caused by heavy metal accumulation. While other chelating agents exist, D-penicillamine is uniquely suited for managing copper-related disorders due to its specific binding properties and effectiveness in the clinical settings related to metal detoxification.

Other options, while potentially having some chelating properties, are not specifically indicated for the direct removal of excess copper and iron in the same manner.