Propofol formulation containing TRIS
First Claim
Patent Images
1. A sterile pharmaceutical composition for parenteral administration which comprises an oil-in-water emulsion comprising propofol in a water immiscible solvent and an amount of tromethamine, said amounts being sufficient to prevent a no more than ten-fold increase in the growth of microorganisms for at least twenty-four hours after adventitious extrinsic contamination.
4 Assignments
0 Petitions
Accused Products
Abstract
Sterile pharmaceutical compositions parenteral administration containing propofol in an oil-in-water emulsion additionally containing an amount of the preservative tromethamine sufficient to prevent signficant growth of microorganisms for at least 24 hours after extrinsic contamination.
99 Citations
23 Claims
- 1. A sterile pharmaceutical composition for parenteral administration which comprises an oil-in-water emulsion comprising propofol in a water immiscible solvent and an amount of tromethamine, said amounts being sufficient to prevent a no more than ten-fold increase in the growth of microorganisms for at least twenty-four hours after adventitious extrinsic contamination.
-
19. A sterile pharmaceutical composition in the form of an oil-in-water emulsion comprising:
-
a) about 2% by weight of propofol;
b) about 10% by weight of soy bean oil;
c) about 1.2% by weight of egg lecithin;
d) about 2.25% by weight of glycerin;
e) about 0.2% by weight tromethamine;
f) sodium hydroxide qs;
g) water to 100%.
-
-
20. A sterile pharmaceutical composition in the form of an oil-in-water emulsion comprising:
-
a) about 1% by weight of propofol;
b) about 10% by weight of soy bean oil;
c) about 1.2% by weight of egg lecithin;
d) about 2.25% by weight of glycerin;
e) about 0.2% by weight tromethamine;
f) sodium hydroxide qs;
g) water to 100%.
-
-
21. A sterile intravenous fat emulsion comprising an amount of tromethamine sufficient to prevent an at least ten fold increase in growth of microorganisms for at least 24 hours after extrinsic contamination.
-
22. A method of preparing a sterile pharmaceutical composition for parenteral administration comprising the steps of:
-
a) providing an oil phase comprising a pharmaceutical and a water-immiscible solvent;
b) providing an aqueous phase comprising a surfactant;
c) homogenizing the oil phase and aqueous phases to provide a concentrated emulsion;
d) providing preservative in water;
e) homogenizing the concentrated emulsion with preservative in water to provide a final emulsion; and
f) sterilizing the final emulsion.
-
-
23. A method of limiting microbial growth in a sterile oil-in-water emulsion pharmaceutical composition following extrinsic contamination of said sterile composition comprising incorporating into said oil-in-water emulsion an amount of tromethamine sufficient to prevent an at least ten fold increase in the growth of microorganisms for at least twenty-four hours after extrinsic contamination.
Specification