An aqueous liquid composition comprising: (a) 2-amino-3-(4-bromobenzoyl)phenylacetic acid or its pharmacologically acceptable salt or hydrate; (b) a non-ionic surfactant; and (c) a preservative; wherein at least 90 percent of the original amount of said 2-amino-3-(4-bromobenzoyl)phenylacetic acid or pharmacologically acceptable salt or hydrate remains in the composition after storage at 60 °C, for 4 weeks. The composition can satisfy the preservative efficacy of US Pharmacopeia 35 (2012). The composition is useful for the treatment of ocular or nasal inflammation of diverse etiology.