https://goo.gl/M5i9fy
When it comes to treating seasonal allergies, one drug is often better than two: updated guidelines for the treatment of teen and adult patients with allergic rhinitis recommend initial treatment with an intranasal corticosteroid alone without an oral antihistamine.
The guidelines, appearing in the Annals of Allergy, Asthma and Immunology, follow a comprehensive review by a joint task force of the American Academy of Allergy, Asthma, and Immunology (AAAAI) and the American College of Allergy, Asthma, and Immunology