Comparative Pharmacology
Head-to-head clinical analysis: ISOPAQUE 280 versus RENOCAL 76.
Peer-Reviewed Evidence
Head-to-head clinical analysis: ISOPAQUE 280 versus RENOCAL 76.
ISOPAQUE 280 vs RENOCAL-76
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.
Contains iothalamate meglumine, an ionic high-osmolar contrast medium that absorbs X-rays, thereby enhancing vascular and tissue contrast during radiographic procedures. It functions by increasing the attenuation of X-rays in blood and tissues where it distributes.
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: 50-100 mL of a 37% iodine-containing solution (approximately 14-28 g iodine) administered as a slow intravenous injection over 1-2 minutes, or as an intravenous infusion over 10-30 minutes, typically not exceeding 4.5 mL/kg body weight.
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 ranges from 1.2 to 2.5 hours in patients with normal renal function. In patients with severe renal impairment, half-life may be prolonged up to 20 hours.
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 excretion via glomerular filtration. Approximately 95% of administered dose is excreted unchanged in urine within 24 hours. Less than 5% undergoes biliary/fecal elimination.
Category C
Category C
Radiocontrast Agent
Radiocontrast Agent