Stabilized formulations of alpha adrenergic receptor antagonists and the uses thereof
First Claim
1. A stable liquid formulation consisting essentially of a low dose of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 and 6.0.
5 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides compositions and stable liquid formulations comprising alpha adrenergic receptor antagonists and use thereof for increasing blood flow. In one embodiment, the stable liquid formulations of this invention are useful for reversing the effects of an anesthetic agent, preferably a long-lasting local anesthetic agent administered in conjunction with an alpha adrenergic receptor agonist.
38 Citations
33 Claims
- 1. A stable liquid formulation consisting essentially of a low dose of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 and 6.0.
-
2. A stable liquid formulation consisting essentially of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 and about 6.0, and wherein said stable liquid formulation is present in a dental cartridge or a pre-filled sterile syringe.
- 14. A stable liquid formulation consisting essentially of a low dose of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, a tonicity modifier, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 and 6.0.
- 15. A stable liquid formulation consisting essentially of a low dose of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, an antioxidant in an amount sufficient to prevent oxidization of said alpha adrenergic receptor antagonist, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 and 6.0.
- 16. A stable liquid formulation consisting essentially of a low dose of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, a complexing agent, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 and 6.0.
-
17. A stable liquid formulation comprising 0.235 mg/ml phentolamine mesylate, 0.5 mg/ml EDTA, 5% d-mannitol, and 16.6 mM acetate buffer, wherein said formulation has a pH of 3.8 to 4.2.
-
18. A stable liquid formulation selected from:
-
19. A stable liquid formulation consisting essentially of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, a tonicity modifier, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 to about 6.0, and wherein said stable liquid formulation is present in a dental cartridge or a pre-filled sterile syringe.
-
20. A stable liquid formulation consisting essentially of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, an antioxidant in an amount sufficient to prevent oxidization of said alpha adrenergic receptor antagonist, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 to about 6.0, and wherein said stable liquid formulation is present in a dental cartridge or a pre-filled sterile syringe.
-
21. A stable liquid formulation consisting essentially of an alpha adrenergic receptor antagonist, a buffer for maintaining pH, an aqueous solvent, a complexing agent, and a metal chelator selected from diammonium ethylenediamine triacetate, hydroxyethyl-ethylenediamine triacetic acid, diethylenetriamine pentaacetic acid, nitriloacetic acid, citric acid, or EDTA, wherein said formulation has a pH of from about 2.0 to about 6.0, and wherein said stable liquid formulation is present in a dental cartridge or a pre-filled sterile syringe.
Specification