To provide a reducing agent for blood uric acid value capable of being ingested for long time without difficulty, having no side effect and high safety, and to provide food, drink or pharmaceutical containing the formulation.SOLUTION: 1. There is provided a reducing agent for blood uric acid value containing alliin (S-(2-propenyl)-L-cysteine sulfoxide) as an active component. 2. There is provided a reducing agent for blood uric acid value containing Allium group plat in which C-S lyase is inactivated in advance, especially components of garlic and onion as active components. 3. There is provided a reducing agent for blood uric acid value of which one of active components is alliin (S-(2-propenyl)-L-cysteine sulfoxide), further food, drink and pharmaceutical containing the reducing agent.SELECTED DRAWING: Figure 1【課題】長期間無理なく摂取することができ、副作用が無く安全性の高い血中尿酸値低下剤、並びに当該製剤を含有する食品、飲料或いは医薬品を提供することである。【解決手段】１．アリイン（Ｓ－（２－プロペニル）－Ｌ－システインスルホキシド）を有効成分とする血中尿酸値低下剤。２．予めＣ－Ｓリアーゼを失活させたＡｌｌｉｕｍ属植物、特にニンニクとタマネギの成分を有効成分として含有する血中尿酸値低下剤３．有効成分の１つがアリイン（Ｓ－（２－プロペニル）－Ｌ－システインスルホキシド）である血中尿酸値低下剤、更に当該低下剤を含有する食品、飲料、医薬品。【選択図】 図１
