Chlorite formulations, and methods of preparation and use thereof
Described herein are chlorite formulations having a pH between about 7 and about 8.5, wherein the chlorite formulations are substantially free of deleterious non-chlorite components. Described herein are chlorite formulations, including pharmaceutical formulations, which are formulated for systemic, parenteral, or intravenous administration. Described herein are methods of preparing and methods of using the chlorite formulations described herein.
1. A pharmaceutical composition comprising:
(a) an aqueous solution comprising sodium chlorite, wherein the weight ratio of chlorite:chlorate is greater than 100:1.5, and the concentration of chlorite is at 60 mM;
(b) a phosphate buffer; and
(c) a pharmaceutically acceptable excipient;
wherein the composition is a sterile intravenous solution having a pH between about 7 and about 9.5.
2. A unit dose form of a formulation, wherein the unit dose form comprises an effective amount of a pharmaceutical composition comprising:
(a) an aqueous solution comprising sodium chlorite, wherein the weight ratio of chlorite:chlorate is greater than 100:1.5, and the concentration of chlorite is at least 60 mM;
(b) a phosphate buffer; and
(c) a pharmaceutically acceptable excipient;
wherein the composition is a sterile intravenous solution having a pH between about 7 and about 9.5.
3. The unit dose form of claim 2 , wherein the unit dose is ready for administration to a subject.
4. The unit dose form of claim 2 , wherein the unit dose is diluted prior to administration to a subject.
5. The unit dose form of claim 2 , wherein the pH of the composition is between about 7.1 and about 7.7.
6. The composition of claim 1 wherein the excipient comprises saline solution.
7. The composition of claim 6 wherein the saline solution is isotonic.
8. The composition of claim 1 comprised in flexible packaging.
9. The composition of claim 1 or 2 , wherein the concentration of chlorite is between 60 mM and about 65 mM.
10. The composition of claim 9 , wherein the concentration of chlorite is about 62 mM.
11. The composition of claim 1 or 2 , wherein the concentration of chlorite is at least 100 mM.
12. The composition of claim 1 , wherein the concentration of chlorite is between about 1 M and about 1.5 M.
13. The composition of claim 1 , wherein the weight ratio of chlorite:chlorate is greater than 100:0.5.
14. The composition of claim 1 , wherein the weight ratio of chlorite:sulfate is greater than 100:16.4.
15. The composition of claim 1 , wherein the weight ratio of chlorite:sulfate is greater than 100:1.6.
16. The composition of claim 1 , wherein sulfate comprises no more than 1 part in 1000 per weight of non-solvent molecules.
17. The composition of claim 1 , wherein the weight ratio of chlorite:chloride is greater than 100:10.
18. The composition of claim 1 , wherein the pH of the composition is between about 7.0 and 8.5.