Comparative Pharmacology
Head-to-head clinical analysis: ISOPAQUE 280 versus RENO 30.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ISOPAQUE 280 versus RENO 30.
ISOPAQUE 280 vs RENO-30
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.
Iodinated contrast agent that attenuates X-rays, enhancing vascular and tissue contrast during radiographic procedures.
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.
Adults: 30 mL (30 g iodine) intravenously as a single dose for imaging procedures; may repeat once if needed.
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 (normal renal function); prolonged to 20-40 hours in severe renal impairment (CrCl <30 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.
Renal: >95% unchanged via glomerular filtration; biliary/fecal: <5%.
Category C
Category C
Radiocontrast Agent
Radiocontrast Agent