Intralipid® 10% (A 10% Intravenous Fat Emulsion) is a sterile, non-pyrogenic fat emulsion prepared for intravenous administration as a source of calories and essential fatty acids. It is made up of 10% Soybean Oil, 1.2% Egg Yolk Phospholipids, 2.25% Glycerin, and Water for Injection. In addition, sodium hydroxide has been added to adjust the pH so that the final product pH is 8. pH range is 6 to 8.9.
The soybean oil is a refined natural product consisting of a mixture of neutral triglycerides of predominantly unsaturated fatty acids with the following structure:
Fatacd (Intralipid 20 Figure 1 Fatacid Intralp)
where
R1c (Intralipid 20 Figure 2 R1c Intralip)
,
R2c (Intralipid 20 Figure 3 R2c Intralip)
and
R3c (Intralipid 20 Figure 4 R3c Intralp)
are saturated and unsaturated fatty acid residues.
The major component fatty acids are linoleic acid (44-62%), oleic acid (19-30%), palmitic acid (7-14%), α-linolenic acid (4-11%) and stearic acid (1.4-5.5%).1 These fatty acids have the following chemical and structural formulas:
Linoleic acid C18H32O2 | Lnacd (Intralipid 20 Figure 5 Linacid Intralp)
|
Oleic acid C18H34O2 | Oldad (Intralipid 20 Figure 6 Oleic Intrlp)
|
Palmitic acid C16H32O2 | Pamad (Intralipid 20 Figure 7 Palacd Intralp)
|
α-Linolenic acid C18H30O2
| Linad (Intralipid 20 Figure 8 2nd Linacd Intrlp)
|
Stearic acid C18H36O2 | Strad (Intralipid 20 Figure 9 Stear Intrlp)
|
Purified egg phosphatides are a mixture of naturally occurring phospholipids which are isolated from the egg yolk. These phospholipids have the following general structure:
Phph (Intralipid 20 Figure 10 Phph Intrlp)
R1c (Intralipid 20 Figure 2 R1c Intralip)
and
R2c (Intralipid 20 Figure 3 R2c Intralip)
contain saturated and unsaturated fatty acids that abound in neutral fats. R
3 is primarily either the choline or the ethanolamine ester of phosphoric acid.
Phscl (Intralipid 20 Figure 11 Phosclne Intrlp)
| Phsam (Intralipid 20 Figure 12 Phosamn Intrlp)
|
| Phosphatidylcholine | Phosphatidylethanolamine |
Glycerin is chemically designated C3H8O3 and is a clear colorless, hygroscopic syrupy liquid. It has the following structural formula:
Image 13 (Intralipid Figure 13 Intrlp)
Intralipid® 10% (A 10% Intravenous Fat Emulsion) has an osmolality of approximately 300 mOsmol/kg water (which represents 260 mOsmol/L of emulsion) and contains emulsified fat particles of approximately 0.5 micron size.
The total caloric value, including fat, phospholipid and glycerin, is 1.1 kcal per mL of Intralipid® 10%. The phospholipids present contribute 47 milligrams or approximately 1.5 mmol of phosphorus per 100 mL of the emulsion.
The primary plastic container (Biofine™) is made from multilayered film specifically designed for parenteral nutrition drug products. The film is polypropylene based comprising three co-extruded layers. It contains no plasticizers and exhibits virtually no leachables. The container does not contain DEHP (di(2-ethylhexyl) phthalate) or PVC. The container is nontoxic and biologically inert. This product is not made with natural rubber latex.
The container-emulsion unit is a closed system and is not dependent upon entry of external air during administration.
The container is overwrapped to provide protection from the physical environment and to provide an additional moisture barrier when necessary.