Once the EpiPen is used, call 911. Anaphylaxis is a life-threatening condition, and using epinephrine is only a temporary fix.
It may be necessary to take a second dose of epinephrine. However, you must wait at least five minutes before taking a second dose. Taking two doses back-to-back can lead to dangerously high blood pressure, stroke, or death.
Do not attempt to reuse the EpiPen. The used EpiPen must now be properly discarded. The ambulance crew will be able to throw the used EpiPen away in their sharps container, or you may need to discard it in its original container.