Comparative Pharmacology
Head-to-head clinical analysis: FERIDEX I V versus OSMOVIST 240.
Peer-Reviewed Evidence
Head-to-head clinical analysis: FERIDEX I V versus OSMOVIST 240.
FERIDEX I.V. vs OSMOVIST 240
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
FERIDEX I.V. (ferumoxytol) is an iron oxide nanoparticle coated with a carbohydrate shell. After intravenous administration, ferumoxytol is taken up by macrophages of the reticuloendothelial system, releasing iron into the intracellular iron pool. Iron is transported by transferrin to erythroid precursor cells for hemoglobin synthesis, thereby replenishing iron stores.
Nonionic iodinated contrast medium that attenuates X-rays is excreted unchanged in urine; increases density of blood vessels and tissues to enhance radiological visualization.
15 mg/kg intravenous infusion over 4 hours, maximum single dose 1200 mg, repeat after 72 hours if ferritin <100 ng/mL and transferrin saturation <20%.
Intravenous bolus injection: 0.5 mL/kg to 1 mL/kg of Osnovist 240 (240 mg iodine/mL) for CT enhancement, up to a maximum of 150 mL per dose.
None Documented
None Documented
Terminal elimination half-life (t½) of ferric carboxymaltose is approximately 7-12 hours (mean ~9 hours) in iron-deficient patients. Clinical context: The iron is rapidly delivered to the reticuloendothelial system for processing; reticulocyte response is seen within 1-2 weeks. The half-life reflects clearance of the complex from plasma, not iron turnover.
Terminal elimination half-life approximately 2 hours (range 1.5–4 hours) in patients with normal renal function; prolonged in renal impairment proportional to creatinine clearance.
Primarily eliminated via hepatobiliary and fecal routes as intact complex; renal excretion is minimal (<1%) for iron, but ferric carboxymaltose complex is not dialyzable. In patients with iron deficiency, ~50-60% of administered iron is incorporated into hemoglobin and red blood cells within 2-4 weeks; the remainder is stored as ferritin and hemosiderin. The carboxymaltose moiety is partially metabolized and excreted via urine and feces.
Primarily renal (glomerular filtration); >95% of administered dose excreted unchanged in urine within 24 hours. Negligible biliary/fecal elimination (<5%).
Category C
Category C
Radiographic Contrast Agent
Radiographic Contrast Agent