Citizen's Petition Currently DTPA is not on the market in the USA. Yes, defies reason, it is available everywhere else in the world but not in the USA. I have filed a petition: Citizen Petition FDA-2026-P-9677. DTPA is the best chelator to treat Gd, Lead, Cadmium, and Inorganic mercury toxicity. It is imp;eritive that all patients with GDD and all practitioners who see them, write a letter of support for this petition. am writing to ask for your support of a Citizen Petition

With DTPA presently unavailable in the USA - available everywhere else in the world. This ofcourse is unacceptable, but the present reality. I have devised an alternative approach using Ca- disodium EDTA. The rationale for regimen differs for DTPA and EDTA, and I will explain the rationale for EDTA below. EDTA stability constant is 17 with Gd, while DTPA is 22.5- DTPA roughly 500,000 times more stable with Gd than EDTA. This means that re-distribution is much more of an issue