About NSF & Gadolinium
Gadolinium compounds are of low to moderate toxicity, although their toxicity has not been investigated in detail. Also, in patients on dialysis, there are data suggesting that it may causenephrogenic fibrosing dermopathy as a side effect of MRI investigations that require the use of a Gadolinium based contrast agent.
FDA first notified health care professionals and the public about the gadolinium-related risks for NSF in June 2006 . Information on the risks was updated in December.
Gadolinium-based contrast agents are commonly used to improve the visibility of internal structures when patients undergo an MRI. Five gadolinium-based contrast agents have been approved for use in the United States: Magnevist (gadopentetate dimeglumine), Ominiscan (gadodiamide); OptiMARK (gadoversetamide); MultiHance; (gadobenate dimeglumine); and Prohance (gadoteridol).
Bayer Schering Pharma, Berlin, Germany, manufactures Magnevist; GE Healthcare, Chalfont St. Giles, U.K., is the maker of Omniscan; OptiMARK is manufactured by Mallinckrodt, Inc., Hazelwood, Mo.; and ProHance and Multihance are made by Bracco Diagnostics Inc., Princeton, N.J.