Anaphylaxis. 1. Recognize you are having the reaction 2. Administer Epinephrine immediately (you should have a 2nd dose available too) 3. Call 911 (epi only lasts for 30 minutes).
Call 911. Anaphylaxis is a serious life threatening condition. If you have already been prescribed Epipen injection use it immediately and then call rescue. If you have Benadryl (diphenhydramine) take it immeditaely and call rescue.