Comparative Pharmacology
Head-to-head clinical analysis: IOPAMIDOL 370 IN PLASTIC CONTAINER versus ISOPAQUE 280.
Peer-Reviewed Evidence
Head-to-head clinical analysis: IOPAMIDOL 370 IN PLASTIC CONTAINER versus ISOPAQUE 280.
IOPAMIDOL-370 IN PLASTIC CONTAINER vs ISOPAQUE 280
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Iopamidol is a nonionic, low-osmolality radiocontrast agent that attenuates X-rays by blocking their passage, thereby enhancing the contrast of vascular structures and tissues during imaging. It does not have a specific molecular target but relies on its iodine content for radiopacity.
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.
Intravenous: 0.5-2 mL/kg (185-740 mg iodine/kg) as a single dose; repeated doses may be administered up to a total of 5 mL/kg (1850 mg iodine/kg) within a 24-hour period.
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.
None Documented
None Documented
Terminal half-life 1.5–2 hours in normal renal function; prolonged to 4–12 hours in severe renal impairment (CrCl <30 mL/min).
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.
Renal: >90% unchanged by glomerular filtration within 24–48 hours; biliary/fecal: <2%.
Renal: approximately 95% of the dose is excreted unchanged in the urine within 24 hours via glomerular filtration. Fecal: <5%; biliary excretion is negligible.
Category C
Category C
Radiocontrast Agent
Radiocontrast Agent