Source:http://linkedlifedata.com/resource/umls/id/C0060234
NCI: A chelating agent with strong binding affinity for thallium, cesium, and other ions. Ferric hexacyanoferrate is used for the treatment of acute and chronic thallium and cesium poisoning. This agent is not absorbed in the gastrointestinal tract and it chelates thallium or cesium ion in the intestines. The resulting complex is eliminated via the feces.