First aid kit – expiry date

Minced meat has a date “to consume until xx xx xx” yoghurt has a date for the “minimum durability”, drugs have a date “usable until: xx xx” xx”, the first-aid kit has a “fall date” . I have to go to HU with my car in January and have found that the first-aid kit carries the “dead date 2011-06” . It is five years old, original packed and unopened. I object to simply throwing away the part, even if there is an offer at Aldi for 5.99 euros. Who is allowed to extend / change this date? Who is able to determine whether the content is still usable and conforms to DIN? Can a pharmacist change the date after checking the contents? What do you do with old dressing boxes? Greeting k2