Help please! Is epipen (epinephrine) jr auto injectors used for all allergic reactions or just emergency reactions?

Limited use. The value of an Epipen (epinephrine) is its ability to help block a tragic evolving allergic reaction and provide time for a person to reach urgent followup care.It's effect is relatively short (hour or so).If you simply break out in hives as a food reaction, it could help some, but since the food will be processed in your body for days, a longer agent like Diphenhydramine or citirazine would be more benificial.