Skip to main content
An official website of the United States government
Español
Government Funding Lapse
Because of a lapse in government funding, the information on this website may not be up to date, transactions submitted via the website may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted.

The NIH Clinical Center (the research hospital of NIH) is open. For more details about its operating status, please visit cc.nih.gov.

Updates regarding government operating status and resumption of normal operations can be found at opm.gov.

iobenguane I 131

(I-oh-BEN-gwayn …)
A drug that contains a form of radioactive iodine and is used to treat adults and children aged 12 years and older with certain types of malignant pheochromocytoma or paraganglioma that have spread or cannot be removed by surgery. It is also being studied in the treatment of other types of cancer. Iobenguane I 131 builds up in tumor cells and gives off radiation that may kill them. It is a type of radiotherapeutic agent. Also called 131I-MIBG, Azedra, and iodine I 131-metaiodobenzylguanidine.
More Information
Search NCI's Dictionary of Cancer Terms