PROBLEM TO BE SOLVED: To provide an allergic constitution-improving agent having excellent allergic constitution-improving action, safe, and easy in the ingestion thereof.;SOLUTION: The allergic constitution-improving agent comprises a sulfation product of a neutral polysaccharide or a salt thereof as an active ingredient. And an IgE production inhibitor comprising a sulfation product of a neutral polysaccharide or a salt thereof as an active ingredient is provided.;COPYRIGHT: (C)2009,JPO&INPIT
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