-
Step 1
Use the medication liquid diphenhydramine at the first sign of an allergic reaction. Diphenhydramine is an over-the-counter antihistamine that can help diminish an allergic reaction such as hives or swelling.
-
Step 2
Inject yourself or a small child with epinephrine "EPI pen." This is a shot of adrenaline that can help open up airways if you're having difficulty breathing or a tightening in your throat during the onset of a reaction.
-
Step 3
Head to the Emergency Room. After taking the medications you have on hand, go straight to the ER where the medical staff will be able to provide further treatment. They may want to keep you for observation to ensure a delayed attack (biphasic) doesn't occur.









