<;P>;PROBLEM TO BE SOLVED: To obtain an antiallergic agent that comprises lactic acid bacteria as an active ingredient having effective antiallergic activity for improving allergy-associated component values such as antigen-specific IgE, etc., symptoms in human and alleviating allergic. <;P>;SOLUTION: The antiallergic agent comprises a culture of Lactobacillus plantarum (typically, Lactobacillus plantarum No.14 strain deposited as FERM P-11550) as an active ingredient. The antiallergic food comprises cell bodies of Lactobacillus plantarum. The antiallergic medicine comprises a culture of Lactobacillus plantarum. <;P>;COPYRIGHT: (C)2007,JPO&INPIT