Abstract: “METHOD OF STANDARDIZATION OF INJECTABLE MEDICINES AND THEIR DILUENTS” is particularly intended to eliminate the possibility of confusion arising from the determination of said injectable medicines and their diluents in the general context of health care, such as hospitals, clinics and similar health-related facilities. The method is essentially intended to allow an injectable medicine to be administered following the correct definition of the appropriate diluent required by each product, said method comprising the standardization of a label (1) designed to be attached to vials or containers of injectable medicines, as well as a label (2) specifically designed to be attached to vials or containers of diluents; said label (1) includes information fields for various relevant information that should be corrected in the event of codification.