| 摘要 |
PURPOSE:To obtain an eye drop for remedy of allergic eye disease such as allergic conjunctivitis containing 9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-a] pyrimidine-4-one or salts thereof as a main ingredient. CONSTITUTION:The antiallergic eye drop containing 9-methyl-3-(1H-tetrazol-5- yl)-4H-pyrido[1,2-a]pyrimidine-4-one or salts thereof as a main ingredient. Potassium salt of the above-mentioned compound is excellent as an allergic agent among the above-mentioned compounds and disodium phosphate and sodium hydrogenphosphate or boric acid and borax or monoethanolamine are added to the potassium salt to prepare the antiallergic eye drop having reduced eye stimulation.
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