An oral, aqueous-based, liquid pharmaceutical composition is provided. The composition comprises up to about 45% glycerine and up to 10% sorbitol wherein the glycerine to sorbitol ratio is about 2:1 to 10:1.本發明提供一種口服水基液體醫藥組合物。該組合物包含多達約45%甘油及多達約10%山梨醇,其中甘油與山梨醇之比係約2:1至10:1。