Comparative Pharmacology
Head-to-head clinical analysis: LIPOSYN 20 versus LIPOSYN III 10.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LIPOSYN 20 versus LIPOSYN III 10.
LIPOSYN 20% vs LIPOSYN III 10%
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Liposyn 20% is an intravenous fat emulsion providing essential fatty acids (linoleic and linolenic acids) and triglycerides. It serves as a caloric source and prevents essential fatty acid deficiency by supplying substrate for energy metabolism and cell membrane synthesis.
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: 1-2 g/kg/day (as soybean oil) initially, up to 2.5 g/kg/day, not to exceed 50% of total caloric intake; infusion rate not to exceed 0.1 g/kg/hour for first 30 minutes; if no adverse reactions, may increase to 0.2 g/kg/hour.
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
Triglyceride clearance half-life approximately 30-60 minutes; depends on lipase activity and clinical status.
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.
Lipids are metabolized; <10% excreted renally as free fatty acids; biliary/fecal excretion minimal.
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