Abstract: An auto-injector body has a movable spring loaded hypodermic needle and attached plunger activated drug container. The auto-injector body is housed within a palm-sized handle and biased so that a sealed end of the auto-injector body protrudes from an open end of the handle. A cover encloses the protruding end and mates with the handle and has external attaching means such as a key chain, belt clip, or strap slots. Pressing the sealed end of the auto-injector body against the skin forces the auto-injector body into the handle to fire a trigger which releases a spring to force the needle through the sealed end into the user and force the plunger to inject the drug through the needle.