The present invention relates to a stable parenteral dosage form with a ready-to-inject sterile stable aqueous solution of Cetrorelix acetate. The invention also relates to an injection device prefilled with the ready-to-inject sterile stable aqueous solution of Cetrorelix acetate. The present invention relates to a use of a parenteral dosage form comprising a ready-to-inject sterile, stable aqueous solution of Cetrorelix acetate for inhibiting premature luteinizing hormone surges in women undergoing controlled ovarian stimulation.
