from my blog:
with all this commotion about epi-pens, which by the way are being manipulated in price because of government intervention, why don't people who might need them just go buy a bottle of it from their local farm supplier, a bunch of syringes, and make up a few to have on hand? there could be an open-source-hardware project (or several) to come up with auto-injectors, or at minimum people could store the loaded syringe in a small foam-lined box to take with them.
I'm not absolutely sure all farm suppliers have it, or will sell to non-licensed veterinarians, but I'm betting it's not so hard to get it.