Stabilized liquid fosaprepitant formulations

1. A liquid composition comprising fosaprepitant or a salt thereof and at least one liquid excipient, wherein after storage at 2-8° C. for at least 1 month, aprepitant is present in an amount concentration of no more than 10%, wherein the composition is ready-to-use or ready-to-dilute.

2. The liquid composition according to claim 1 , wherein the aprepitant concentration is no more than 3%.

3. The liquid composition according to claim 2 , wherein the fosaprepitant is fosaprepitant dimeglumine.

4. The liquid composition according to claim 1 , wherein the liquid excipient comprises aqueous albumin.

5. The liquid composition according to claim 1 , wherein the liquid excipient comprises at least one solubilizer, wherein the solubilizer comprises one or more alcohols, glycols, or aprotic solvents.

6. The liquid composition according to claim 5 , wherein the alcohol is selected from ethanol, octanol, glycofurol or mixtures thereof.

7. The liquid composition according to claim 5 , wherein the glycol is selected from propylene glycol, glycerol, polyethylene glycol or mixtures thereof.

8. The liquid composition according to claim 5 , wherein the aprotic solvent is selected from dimethylacetamide, Isopropyl myristate, dimethylsulphoxide (DMSO), dimethyl isosorbide, methylene chloride, triacetin, diacetin, tributyrin, triethyl citrate, acetyl triethyl citrate, acetyl tributyl citrate, triethylglycerides, triethyl phosphate, diethyl phthalate, diethyl tartrate, mineral oil, polybutene, silicone fluid, ethyl lactate, N-methyl-2-pyrrolidone, 2-pyrrolidone, methyl acetate, ethyl acetate, methyl ethyl ketone, dimethyl formamide, tetrahydrofuran, caprolactam, and 1-dodecylazacyclo-heptan-2-one.

9. The liquid composition according to claim 5 , wherein the solubilizer comprises one or more of ethanol, propylene glycol, glycerol, dimethylacetamide, N-methylpyrrolidone, or DMSO.

10. The liquid composition according to claim 1 , comprising at least one stabilizer.

11. The liquid composition according to claim 10 , wherein the stabilizer is selected from fatty acid metal salts, antioxidants, and chelating agents.

12. The liquid composition according to claim 11 , wherein the fatty acid metal salt has the formula MO 2 C—R, wherein:

M is metal selected from lithium, sodium, potassium, magnesium, and calcium; and

R is a C 4 -C 20 alkyl or alkenyl group.

13. The liquid composition according to claim 12 , wherein the fatty acid metal salt is sodium caprylate.

14. The liquid composition according to claim 11 , wherein the antioxidant is selected from glycine, α-tocopherol, a-tocopherol polyethylene glycol succinate, ascorbic acid, propyl gallate, butylated hydroxyanisole, and butylated hydroxytoluene.

15. The liquid composition according to claim 11 , wherein the chelating agent comprises one or more salts of ethylenediaminetetraacetic acid.

16. The liquid composition according to claim 15 , wherein the salt of ethylenediaminetetraacetic acid comprises edetate disodium.

17. A liquid pharmaceutical composition comprising:

a) fosaprepitant dimeglumine in an amount from 50-250 mg;

b) at least one salt of ethylenediaminetetraacetic acid in an amount from 10-100 mg;

c) albumin in an amount from 250 mg-100 g; and

d) water in an amount from 3-300 ml.

18. The liquid composition according to claim 17 , further comprising a fatty acid metal salt in an amount from 100-2,000 mg; wherein the fatty acid metal salt has the formula MO 2 C—R, wherein:

M is metal selected from lithium, sodium, potassium, magnesium, and calcium; and

R is a C 4 -C 20 alkyl or alkenyl group.

19. The liquid composition according to claim 18 , wherein the fatty acid metal salt comprises sodium caprylate.

20. A liquid pharmaceutical composition comprising:

a) fosaprepitant dimeglumine in an amount from 50-250 mg; and

b) at least one solubilizer in an amount from 1-5 ml.

21. The liquid composition according to claim 20 , wherein the solubilizer comprises one or more of ethanol, propylene glycol, glycerol, dimethylacetamide, N-methylpyrrolidone, or DMSO.

22. A method of treating chemotherapy-induced nausea and vomiting (CINV), wherein the method comprises administering to a patient a liquid pharmaceutical composition according to claim 1 .