PROBLEM TO BE SOLVED: To provide immunocompetent-enhancing agents, and preventive or improving agents for allergic symptoms, which have a macrophage activity-promoting effect and a degranulation inhibitory effect and the like.SOLUTION: The present invention provides a macrophage activation promoter, a degranulation inhibitor, a cytokine production promoting agent, an immunocompetent-enhancing agent, and a preventive or improving agent of allergic symptoms, wherein young vinegar which is black vinegar at the stage where ripening has not progressed sufficiently is contained as an active ingredient. The cytokine production promoting agent is effective particularly to IL-6 and TNF-α productive promotion.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】マクロファージ活性促進作用、脱顆粒反応抑制作用等を有する、免疫力向上剤、アレルギー症状の予防又は改善剤の提供。【解決手段】熟成が十分に進んでいない段階の黒酢である若酢を有効成分とするマクロファージ活性促進剤、脱顆粒抑制剤、サイトカイン産生促進剤、免疫力向上剤及びアレルギー症状の予防又は改善剤。前記サイトカイン産生促進剤は、特にIL-6及びTNF-αの産生促進に有効である。【選択図】なし