A solution of ferric ammonium citrate (Geritol) used to enhance the delineation of the bowel. With T1 weighted magnetic resonance imaging (MRI) the predominantly positive enhancement helps to distinguish organs and tissues that are adjacent to the upper regions of the gastrointestinal tract. Product name found as both Ferriseltz® and FerriSeltz®.

Oncomembrane, Inc. is a distribution diversity of Otsuka America. Otsuka America representative confirmed FerriSeltz, with an internal capital S.
Source: FDA drug approvals - 10/14/97

MRI Contrast Agents:

Please note that the product name is found as both Ferriseltz and FerriSeltz.

Ferric ammonium citrate is a complex salt of indefinite composition that contains varying amounts of iron, that is obtained as red crystals or a brownish yellow powder or as green crystals or powder, and that was used formerly in medicine for treating iron-deficiency anaemia.
Solutions (e.g. corn oil emulsion) of ferric ammonium citrate (e.g., FerriSeltz, Geritol) can be used as positive oral contrast agents in MRI. Ferric ammonium citrate is safe and effective in humans, but has minor side effects.

See also Classifications, Characteristics, etc.

Otsuka Maryland Research Institute, Inc. (OMRI), a new affiliated company, was established to further Otsuka Pharmaceutical Co., Ltd.'s goal of globalizing core clinical R&D activities, while Otsuka America Pharmaceutical, Inc. (OAPI) focuses on product commercialization.

MRI Contrast Agents: