Comparative Pharmacology
Head-to-head clinical analysis: INTRALIPID 20 versus LIPOSYN 20.
Peer-Reviewed Evidence
Head-to-head clinical analysis: INTRALIPID 20 versus LIPOSYN 20.
INTRALIPID 20% vs LIPOSYN 20%
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 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.
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: 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.
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.
Triglyceride clearance half-life approximately 30-60 minutes; depends on lipase activity and clinical status.
Renal: negligible. Biliary/fecal: >90% as component of lipid metabolism, excretion via bile and fecal elimination of lipid particles.
Lipids are metabolized; <10% excreted renally as free fatty acids; biliary/fecal excretion minimal.
Category C
Category C
Intravenous Fat Emulsion
Intravenous Fat Emulsion