Composition

A method for the treatment of conditions of the eye or nose in which conditions allergy or immune reactions play a contributory part which comprises administering topically or by sub-conjunctival injection to a patient suffering from such condition a composition which comprises a sterile aqueous solution containing 1,3-bis(2-carboxy-chromon-5-yloxy)-propan-2-ol or a pharmaceutically acceptable salt thereof as an active ingredient, wherein, in said composition, the said active ingredient is present in an amount of from 0.1 to 10% w/v, the said composition containes less than about 0.40 ppm of ions of metals in Groups IIa, Ib, IIb and IVb of the Periodic Table and of the transition metals, the said composition being a substantially clear, sterile aqueous solution.

A method for the treatment of conditions of the eye or nose in which conditions allergy or immune reactions play a contributory part which comprises administering topically or by sub-conjunctival injection to a patient suffering from such condition a composition which comprises a sterile aqueous solution containing 1,3-bis(2-carboxy-chromon-5-yloxy)-propan-2-ol or a pharmaceutically acceptable salt thereof as an active ingredient, wherein, in said composition, the said active ingredient is present in an amount of from 0.1 to 10% w/v, the composition contains less than about 20ppm of ions of metals in Groups IIa, Ib, IIb and IVb of the Periodic Table and of the transition metals, the composition contains from about 0.05 to 0.1% w/v of a pharmaceutically acceptable chelating or sequestering agent, and the said composition is a substantially clear aqueous solution.