There's one on Amazon for $3.

The Medical Alert Foundation will give you one, but the catch with them is you have to join in with a membership.

I don’t know any place that gives out free medical necklaces or bracelets . But I’ve got my medical necklaces or bracelets from the pharmacy at a cheap price. .

Yeah, do a Google search. Tell them your medical reason, and they'll more than likely give you some better info. It might be covered under insurance too.