Comparative Pharmacology
Head-to-head clinical analysis: ISOPAQUE 280 versus MD 76R.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ISOPAQUE 280 versus MD 76R.
ISOPAQUE 280 vs MD-76R
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Isopaque 280 (metrizoate) is an ionic, high-osmolar iodinated radiocontrast agent that attenuates X-rays by increasing the density of tissues where it distributes, thereby enhancing vascular and organ visualization during imaging.
MD-76R is a radiopaque contrast agent that contains iodine, which attenuates X-rays, thereby enhancing the contrast of blood vessels and tissues during radiographic procedures. It functions by increasing the absorption of X-rays in areas where it is present, allowing for visualization of vascular structures and organ perfusion.
Iohexol (ISOPAQUE 280) is administered intravenously, intra-arterially, or by other appropriate routes. Typical adult dose for CT imaging: 50–150 mL (concentration 280 mg I/mL) as a bolus or infusion. For angiography: 5–80 mL per injection, depending on procedure. Repeat doses may be given up to a total of 350 mL.
2–4 mL/kg intravenously, maximum 150 mL per procedure.
None Documented
None Documented
Terminal elimination half-life is 1.5–2 hours in patients with normal renal function; prolonged to >10 hours in severe renal impairment, requiring dose adjustment.
Terminal half-life 1-2 hours; prolonged in renal impairment.
Renal: approximately 95% of the dose is excreted unchanged in the urine within 24 hours via glomerular filtration. Fecal: <5%; biliary excretion is negligible.
Primarily renal; 95% eliminated unchanged in urine within 24 hours; <1% fecal.
Category C
Category C
Radiocontrast Agent
Radiocontrast Agent