EDTA was given orally to patients, by the late Dr Issels at his cancer clinic in Germany, where it proved 'very useful'

It is now being used in the UK by leading 'holistic' dentists such as Jack Levenson, who wish to chelate mercury out of the system after it has entered via the amalgam fillings of the patient. In such cases an antioxidant formulation (vitamins A, C, E, etc.) as well as enzymes such as Glutathione peroxidase are supplemented along with oral EDTA. This form of EDTA should be seen as a form of maintenance rather than having the potential for chelation held by intravenous infusion. EDTA supplements for maintenance use are given morning and evening with food ­ doses of 150 mg are usual.