FDA pharmacologic class

Radiographic Contrast Agent

11 medicines are in FDA's class of radiographic contrast agents: carbon dioxide, barium sulfate (Readi-Cat), iohexol (Omnipaque), iomeprol (Iomervu), iopamidol (Isovue), diatrizoate (Gastrografin), ioversol (Optiray), iodixanol (Visipaque) and 3 more; 1 combination product also contains one. 4 of the 12 are listed from generic labelers (FDA NDC Directory, October 8, 2026).

Which medicines are radiographic contrast agent?

Recalls: FDA enforcement reports, 2012 on
Medicine	Brand names	Generic labelers (all forms)	Pharmacy cost	Boxed warning	Shortage	Recalls since 2012
Carbon dioxide	none listed	none listed	n/a	No	No current entry	2
Barium sulfate	Varibar, Readi-Cat, E-Z-Paque	none listed	n/a	No	No current entry	3
Iohexol	Omnipaque	1 labeler	n/a	Yes	No current entry	4
Iomeprol	Iomervu	none listed	n/a	Yes	No current entry	0
Iopamidol	Isovue, Isovue-M	1 labeler	n/a	Yes	No current entry	2
Diatrizoate	Cystografin, Gastrografin	3 labelers	n/a	No	No current entry	3
Ioversol	Optiray	none listed	n/a	Yes	No current entry	2
Iodixanol	Visipaque	1 labeler	n/a	Yes	No current entry	0
Iopromide	Ultravist	none listed	n/a	Yes	No current entry	0
Ethiodized oil	Lipiodol	none listed	n/a	Yes	No current entry	0
Iothalamate	Cysto-Conray	none listed	n/a	Yes	No current entry	0
Carbon dioxide and oxygen	none listed	none listed	n/a	No	No current entry	0

Source: FDA Established Pharmacologic Class (NDC Directory, openFDA); CMS NADAC of October 7, 2026; FDA shortages and recalls (FDA files October 8, 2026)

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