THE PRESENT DISCLOSURE RELATES TO CRYSTALLINE FORM OF (S)-N-((S)-1-CYCLOHEXYL-2-{(S)-2-[4-(4-FLUORO-BENZOYL)-THIAZOL-2-YL]-PYRROLIDIN-1-YL}-2-OXO-ETHYL)-2-METHYLAMINO-PROPIONAMIDE, SALTS AND HYDRATES THEREOF. THIS DISCLOSURE ALSO RELATES TO SOLID ORAL FORMULATION OF (S)-N-((S)-1-CYCLOHEXYL-2-{(S)-2-[4-(4-FLUORO-BENZOYL)-THIAZOL-2-YL]-PYRROLIDIN-1-YL}-2-OXO-ETHYL)-2-METHYLAMINO-PROPIONAMIDE, PHARMACEUTICALLY ACCEPTABLE SALTS, SOLVATES (INCLUDING HYDRATES) THEREOF, AS WELL AS METHODS OF TREATMENT USING THE SAME.