Comparative Pharmacology
Head-to-head clinical analysis: ISOPAQUE 280 versus MD 60.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ISOPAQUE 280 versus MD 60.
ISOPAQUE 280 vs MD-60
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-60 is a nonionic iodinated contrast agent. It attenuates X-rays by increasing the density of structures and organs, improving radiographic visualization.
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.
Intravenous administration, 60 mg/kg as a single dose over 30 min.
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 elimination half-life is 18–24 hours in patients with normal renal function (CrCl >90 mL/min); prolonged to >40 hours in moderate renal impairment (CrCl 30–60 mL/min), requiring dose adjustment.
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 elimination of unchanged drug (~60% within 24 hours) via glomerular filtration; biliary/fecal excretion accounts for ~30% as metabolites; ~10% undergoes enterohepatic recirculation.
Category C
Category C
Radiocontrast Agent
Radiocontrast Agent