A needle loaded with a dose of epinephrine carried around by people with life threatening allergies. The autoinjector quickly injects a prefilled dose of epinephrine into the system thereby opening a window in which a person can get medical help before dying.
Do you have your epinephrine autoinjector with you in case they put nuts in any of the dishes being served at Blair's wedding?
A medical device designed to deliver a specific dose of medication or a therapeutic substance to a patient, typically through a subcutaneous injection.
An autoinjector is like a syringe but with a hidden needle.