Darzalex 400 mg/20 ml. Each box contains one flakon (vial) of concentrated solution for infusion. The active ingredient is Daratumumab, and it is manufactured by Janssen. Darzalex is a highly specialized monoclonal antibody used in the treatment of multiple myeloma, a type of blood cancer. It is classified as \"Steril - Sitotoksik,\" indicating it is sterile and cytotoxic (toxic to cells), requiring careful handling and administration. This medication must be prepared and administered intravenously by a qualified healthcare professional in a clinical setting.