Chrome Red Medical ID Dog Tag Designed by MedicAlert&reg; "Penicillin Allergy" The MedicAlert Chrome Red Medical ID Dog Tag with free year of MedicAlert Essential included Made of premium quality from the original MedicAlert Foundation Your medical ID dog tag comes with a 30" beaded chain and is personally engraved to communicate your Penicillin Allergy Only MedicAlert medical IDs are connected to a live 24/7 emergency response MedicAlert medical IDs are recognized by emergency professionals and physicians around the world