Patent ID: 8236804

Claim:
A method of treating a major depressive disorder, the method comprising: administering to a patient in need thereof a pharmaceutical composition comprising an effective amount of a compound which is 1-[4-(5-cyanoindol-3-yl)butyl]-4-(2-carbamoyl-benzofuran-5-yl)-piperazine hydrochloride anhydrate in crystalline modification IV (Form IV) having at least five characteristic peaks selected from the degrees two-theta values corresponding to 9.08±0.1, 12.85±0.1, 14.50±0.1, 16.89±0.1, 18.89±0.1, 20.43±0.1, 21.72±0.1, 24.61±0.1, 27.35±0.1 and 28.18±0.1 and one or more conventional auxiliary substances and/or carriers, wherein the major depressive disorder is treated in the patient.