Summary The investigation of effects of Ketotifen and Clemastin in the symptomatic treatment of allergic rhinitis. Our research has been performed in Ondokuz Mayıs Univer¬sity Medical School ENT Deparment on 35 patients with allergic rhinitis.The patients were treated with Ketoti¬fen and Clemastin as two separated groups.The effects of these drugs were investigated and discussed.The relevant literature has also been reviewed. Özet Ondokuz Mayıs Üniversitesi Tıp Fakültesi Kulak-Burun-Boğaz Anabilim Dalına başvuran ve allerjik rinit tanısı alan 35 hasta üzerinde Ketotifen ile Clemastin adlı ilaç¬ların semptomatik tedavideki etkileri karşılaştırılarak incelenmiş ve elde edilen bulgular tartışılmıştır.