FYI, there is a generic epipen available for much less money than the Epipen (~$100 vs $600). You can buy it at Walmart, Costco, or Rite-Aid. In some states, your pharmacists can't substitute it for the Epipen--you have to ask your doctor to prescribe it by name: "epinephine injection, USP auto-injector". The main difference between the generic and the Epipen is that you have to remove two caps instead of one.
http://www.epinephrineautoinject.com/how_to_use_epinephrine_injection_USP_auto_injector.php
http://www.consumerreports.org/drugs/how-to-get-cheaper-epipen-alternative/
http://www.epinephrineautoinject.com/how_to_use_epinephrine_injection_USP_auto_injector.php
http://www.consumerreports.org/drugs/how-to-get-cheaper-epipen-alternative/