Comparative Pharmacology
Head-to-head clinical analysis: INTRALIPID 20 versus LIPOSYN III 10.
Peer-Reviewed Evidence
Head-to-head clinical analysis: INTRALIPID 20 versus LIPOSYN III 10.
INTRALIPID 20% vs LIPOSYN III 10%
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Intralipid 20% is a fat emulsion providing essential fatty acids and triglycerides. It serves as a source of calories and essential fatty acids. In parenteral nutrition, it prevents and treats essential fatty acid deficiency. In lipid rescue therapy for local anesthetic toxicity, it acts as a 'lipid sink' to sequester lipophilic drugs, and may also enhance mitochondrial fatty acid oxidation and improve cardiac contractility.
Liposyn III 10% is an intravenous fat emulsion that provides essential fatty acids (linoleic and linolenic acids) and a source of calories. The triglycerides are hydrolyzed by lipoprotein lipase to free fatty acids and glycerol, which are then utilized for energy production or stored. The emulsion particles are metabolized similarly to endogenous chylomicrons.
Intravenous infusion at a rate of 0.1 g fat/kg/hour, increasing to 0.5 g fat/kg/hour if tolerated. Maximum daily dose: 2.5 g fat/kg (50 mL/kg/day of 20% emulsion).
Intravenous infusion: 500 mL to 1000 mL per day, providing 10% lipid emulsion (100 g fat per liter), infused over 8-12 hours as part of parenteral nutrition, not to exceed 2.5 g fat/kg/day.
None Documented
None Documented
Terminal elimination half-life of lipid particles: approximately 30 minutes for chylomicron-like particles; triglycerides half-life ~15-30 minutes. Clinical context: rapid clearance by lipoprotein lipase.
Triglycerides in Liposyn III 10% have a terminal elimination half-life of approximately 0.5 to 1 hour in patients with normal lipid metabolism. In neonates or hepatic impairment, half-life may be prolonged.
Renal: negligible. Biliary/fecal: >90% as component of lipid metabolism, excretion via bile and fecal elimination of lipid particles.
Lipids are metabolized via hydrolysis by lipoprotein lipase into free fatty acids and glycerol. Free fatty acids undergo beta-oxidation or re-esterification. Elimination of CO2 via lungs; less than 5% excreted renally as glycerol and other metabolites.
Category C
Category C
Intravenous Fat Emulsion
Intravenous Fat Emulsion