An individual packaging box with a false recognition prevention display function

An object is to provide a packaging box that is excellent in prevention of misidentification due to the presence of a plurality of content standards in a drug. A drug delivery device comprising: A box body for containing a content, for containing a drug of one content standard among drugs having a plurality of content standards as the content, the box body having a take-out opening that allows the content to be taken out, The container body comprising a lid portion that allows the box body to be opened and closed, and a flap portion that is disposed to overlap the lid portion from a back side, a surface of the flap portion being provided with an indication regarding the medicament, Wherein the content specification includes a specification listing display listing and indicating content specifications of the drug other than the content, along with the content specifications of the content,...