Stabilized solid and liquid pharmaceutical formulations comprising a GHRH molecules as active ingredient, and more particularly GHRH analogs including [trans-3-hexenoyl]hGHRH (1-44) amide, are disclosed. The formulation comprises an anionic surfactant and a non-reducing sugar, and has a pH of about 4.0 to about 7.5. Also disclosed is the use of the formulation for the treatment of various conditions, methods of preparing the formulation, as well as kits containing it.