A medicament for treating allergic rhinitis, characterized in that (A) a compound represented by the formula (I) or a pharmaceutically acceptable salt thereof, is combined with (B) at least one compound selected from the group consisting of cetirizine, fexofenadine, and loratadine, or a pharmaceutically acceptable salt thereof. Since the effects of the medicament for treating allergic rhinitis of the present invention surpass the sum of the effects of single dose of each of the agents against the allergic rhinitis, the medicament is useful as a medicament for treating allergic rhinitis having potent effects.
