Is allergen immunotherapy effective for the symptomatic treatment of seasonal allergies?

Abstract

Is allergen immunotherapy effective for the symptomatic treatment of seasonal allergies? Evidence-Based Answer: Subcutaneous allergen immunotherapy effectively reduces symptoms and decreases rescue medication usage for patients with seasonal allergic rhinitis. Sublingual allergen immunotherapy has similar results in seasonal and perennial allergic rhinitis (SOR: A, meta-analyses of RCTs).