Frequency of AEs resulting in Epinephrine Use. (A) Patterns of use of epinephrine concurrently with administration of antihistamines, albuterol, oral steroids, or an emergency department visit. (B) Patterns of epinephrine use in response to specific symptoms (cough, wheeze, hives, abdominal pain, or vomiting). Overlap of AEs with two or more given symptoms (ex: cough and wheeze) may be present.