Optiray™ 300 contrast agent is a non-ionic, low osmolar, lower viscosity injectable and intended for intravascular administration. It is a prescription drug that is intended to be therapeutically and biologically inert when injected into the body for use in organ or tissue enhancement in CT, X-ray and fluoroscopy imaging procedures for which it is approved. Each mL of Optiray™ 300 contrast agent contains 636 mg of ioversol, 3.6 mg of tromethamine as a buffer and 0.2 mg of edetate calcium disodium as a stabilizer.