Disability, Medical and Allergy ID Tags

[Mickey48]

I thought this ID tags (That can get engraved on the backside) could be use- and helpful for owners of alergic, sick or disabled dogs or for owners where the dogs must take daily medication.
What do you think about the tags?

@The member from Soffolk with the "food-allergy-dog" (When I saw the allergy-tags, you were the first person I thought of, but I don't know why) and all members with sick, allergic or disabled dogs:
Are there some useful tags for you or someone in your area?

Allergy tags:
Eggs
http://www.amazon.com/Allergic-Eggs-...6658427&sr=1-1
Milk
http://www.amazon.com/Allergic-Milk-...6658622&sr=1-1
Corn
http://www.amazon.com/Allergic-Corn-.../dp/B0033RHKU0
Chicken
http://www.dogtagart.com/pet-tags/im...hicken-dog-tag
Beef
http://www.dogtagart.com/pet-tags/beef-allergy-tag
Gluten
http://www.dogtagart.com/pet-tags/gluten-allergy-tag
Beef and Gluten
http://www.dogtagart.com/pet-tags/be...-alert-jewelry
Disability tags:
Blindness
http://www.dogtagart.com/pet-tags/im-blind-pet-id-tag
Deafness
http://www.dogtagart.com/pet-tags/im-deaf-pet-id-tag
Takes medicaments/Sickness tags:
Hipdysplasia (HD)
http://www.amazon.com/Have-Dysplasia...6658159&sr=8-1
Diabetes
http://www.dogtagart.com/pet-tags/i-...tes-pet-id-tag
Athritis
http://www.dogtagart.com/pet-tags/i-...hritis-dog-tag
Takes medicaments
http://www.dogtagart.com/pet-tags/i-...ion-pet-id-tag