The present invention relates to a liquid pharmaceutical composition for oral administration and to the use thereof, said composition being characterized by comprising: (i) a therapeutically effective quantity of desloratadine or a pharmaceutically acceptable salt thereof; (ii) a therapeutically effective quantity of prednisolone or a pharmaceutically acceptable salt thereof; (iii) a selection of pharmaceutically acceptable excipients wherein the flavoring excipient used is free of vanillin and derivative thereof, and wherein the pH of said composition is maintained at a value of between 6.0 and 7.5.In the preferred embodiment, the composition of the invention is an antihistamine composition for oral administration, in the form of sugar-free syrups, intended for pediatric use.