I almost passed this thread over, thinking I'd answered it. But I answered it on the sister site.

I have one, but it's outdated. I do have cards in my wallet that list my primary doctor and my neurologist. The bracelet, I have it's rather cool. It has an awareness ribbon and everything. One of the charms fell off, and it lists an old address. I have MS, and was taking a med, that came with some potential side effects. It was better to have that med mentioned, than not.

If you feel, it's important, in an emergency to have any med allergies listed and you are taking meds that could adversely interact with other meds, it's a good idea, to have something on your person or in your purse/wallet that mentions this.