Duodote

An ATNAA (Antidote Treatment Nerve Agent Autoinjector) is any of a variety of autoinjectors in use with the US Armed Forces. An autoinjector is a medical device designed to deliver a single dose of a particular (typically life-saving) drug. Most autoinjectors are spring-loaded syringes. By design, autoinjectors are easy to use and are intended for self-administration by patients. The site of injection depends on the drug loaded, but it typically is administered into the thigh or the buttocks.... [wikipedia]