1. A parenteral formulation of vasopressin comprising:
a) vasopressin
b) stabilizer comprising
(i) one or more buffers and
(ii) one or more excipients selected from amino acids or chelating agents and
c) one or more additional excipients
wherein the formulation is free of acetate buffer
2. The formulation of claim 1, wherein the amino acid is selected from the group comprising of aspartic acid, isoleucine, arginine and combinations thereof.
3. The formulation of claim 1, wherein the buffers are selected from the group comprising of tris, phosphate buffer, citrate buffer, sodium carbonate, sodium bicarbonate, tartarate, benzoate, aspartic acid, ascorbic acid, succinic acid, lactic acid, glutaric acid, malic acid, boric acid, orthophosphoric acid and carbonic acid and combinations thereof.
4. The formulation of claim 1, wherein chelating agent is selected from the group comprising DOTA (1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid), DTPA (diethylene triamine-N,N,N',N",N"-pentaacetate)/pentetic acid, EDTA (Ethylenediamine tetraacetic acid), calcium disodium edetate or their salts and combinations thereof.
5. The formulation of claim 1, wherein the formulation is a ready to use solution.

6. The formulation of claim 1, wherein the formulation is a ready to dilute solution.
7. A ready to use parenteral formulation of vasopressin comprising:
a) vasopressin
b) stabilizer comprising
(i) one or more buffers and
(ii) one or more excipients selected from amino acids or chelating agents and
c) one or more additional excipients
wherein the formulation is free of acetate buffer
8. The formulation of claim 7, wherein the concentration of vasopressin ranges from 0.01 units/ml to 2.5 units/ml.
9. A ready to dilute parenteral formulation of vasopressin comprising:
a) vasopressin
b) stabilizer comprising
(i) one or more buffers and
(ii) one or more excipients selected from amino acids or chelating agents and
c) one or more additional excipients
wherein the formulation is free of acetate buffer
10. The formulation of claim 9, wherein the concentration of vasopressin
ranges from 2.5units/ml to 100 units/ml.