Eosinophilic esophagitis (EoE) is an inflammatory disease of the esophagus, characterized by eosinophilic infiltration and gastrointestinal (GI) symptoms. There are no pharmacological treatments for EoE approved by the US Food and Drug Administration (FDA). Supported by published case series and controlled trials in children and adults, the most widely used drug treatment for EoE is off-label use of corticosteroids intended for local (esophageal mucosal) action.