<unk>  is a diagnostic contrast agent. It is injected intravenously before taking X-ray images to increase arterial contrast in the final image. It was marketed in the US under the trade name<unk>  by Guerbet, L.L.C., but has been discontinued in 2017.
Ioxilan
Quadrosilan
Avacopan
Clofoctol
Bethanechol
Tocofersolan
Buffalopox
Cyclobenzaprine