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"per_unit_price": 471.528, "evidence": "３００ｍＬ　ペットボトル　１ケース（２４本）", "reviews": 109, "stars": 4.83, "shop": "ぱーそなるたのめーる", "url": "https://store.shopping.yahoo.co.jp/tanomail/9657382.html", "image": "https://item-shopping.c.yimg.jp/i/g/tanomail_9657382"}, {"rank": 35, "name": "大塚製薬　経口補水液　ＯＳ−１（オーエスワン）　３００ｍＬ　ペットボトル　１ケース（２４本）（お取寄せ品）", "price": 3576, "qty": 7.2, "unit": "L", "per_unit_price": 496.667, "evidence": "３００ｍＬ　ペットボトル　１ケース（２４本）", "reviews": 150, "stars": 4.76, "shop": "ぱーそなるたのめーる", "url": "https://store.shopping.yahoo.co.jp/tanomail/9657375.html", "image": "https://item-shopping.c.yimg.jp/i/g/tanomail_9657375"}, {"rank": 36, "name": "【送料無料】　あすつく　OS-1（オーエスワン）500ml×12本セット　大塚製薬　【ENERGYオリジナルティッシュ付】", "price": 3100, "qty": 6.0, "unit": "L", "per_unit_price": 516.667, "evidence": "500mlx12本", "reviews": 19, "stars": 4.53, "shop": "エナジードラッグ2号店", "url": "https://store.shopping.yahoo.co.jp/denergy2/al-4987035576419-12set-sk.html", "image": 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"qty": 12.0, "unit": "L", "per_unit_price": 1633.333, "evidence": "500mlx24本", "reviews": 13, "stars": 5.0, "shop": "サンドラッグe-shop", "url": "https://store.shopping.yahoo.co.jp/sundrugec/4987035652205x5.html", "image": "https://item-shopping.c.yimg.jp/i/g/sundrugec_4987035652205x5"}, {"rank": 43, "name": "経口補水液 ◆大塚製薬オーエスワン（OS-1) 500mlx24本   【5個セット】", "price": 20181, "qty": 12.0, "unit": "L", "per_unit_price": 1681.75, "evidence": "500mlx24本", "reviews": 30, "stars": 4.83, "shop": "サンドラッグe-shop", "url": "https://store.shopping.yahoo.co.jp/sundrugec/4987035576402x5.html", "image": "https://item-shopping.c.yimg.jp/i/g/sundrugec_4987035576402x5"}, {"rank": 44, "name": "オーエスワン（OS-1） 経口補水液 500mL 1セット（6本） 大塚製薬工場", "price": 1260, "qty": 0.5, "unit": "L", "per_unit_price": 2520.0, "evidence": "500mL 1セット", "reviews": 231, "stars": 4.73, "shop": "LOHACO by アスクル", "url": "https://lohaco.yahoo.co.jp/store/h-lohaco/item/w335115/", "image": "https://item-shopping.c.yimg.jp/i/g/rd-lohaco_w335115"}, {"rank": 45, "name": "味の素 経口補水液 アクアソリタ 500mL 1セット（8本入り）【 熱中症対策 経口補水 栄養ドリンク スポーツドリンク 】", "price": 1660, "qty": 0.5, "unit": "L", "per_unit_price": 3320.0, "evidence": "500mL 1セット", "reviews": 38, "stars": 4.58, "shop": "LOHACO by アスクル", "url": "https://lohaco.yahoo.co.jp/store/h-lohaco/item/4569654/", "image": "https://item-shopping.c.yimg.jp/i/g/rd-lohaco_4569654"}, {"rank": 46, "name": "オーエスワン （OS-1） 経口補水液 300mL 1セット（12本） 大塚製薬工場", "price": 1836, "qty": 0.3, "unit": "L", "per_unit_price": 6120.0, "evidence": "300mL 1セット", "reviews": 11, "stars": 4.36, "shop": "LOHACO by アスクル", "url": "https://lohaco.yahoo.co.jp/store/h-lohaco/item/nj22070/", "image": "https://item-shopping.c.yimg.jp/i/g/rd-lohaco_nj22070"}, {"rank": 47, "name": "味の素 経口補水液 アクアソリタ 500mL 1セット（24本入り）【 熱中症対策 経口補水 栄養ドリンク スポーツドリンク 】", "price": 4490, "qty": 0.5, "unit": "L", "per_unit_price": 8980.0, "evidence": "500mL 1セット", "reviews": 61, "stars": 4.52, "shop": "LOHACO by アスクル", "url": "https://lohaco.yahoo.co.jp/store/h-lohaco/item/j530670/", "image": "https://item-shopping.c.yimg.jp/i/g/rd-lohaco_j530670"}, {"rank": 48, "name": "オーエスワン（OS-1） 経口補水液 500mL 1ケース（24本） 大塚製薬工場", "price": 4776, "qty": 0.5, "unit": "L", "per_unit_price": 9552.0, "evidence": "500mL 1ケース", "reviews": 299, "stars": 4.68, "shop": "LOHACO by アスクル", "url": "https://lohaco.yahoo.co.jp/store/h-lohaco/item/w577449/", "image": "https://item-shopping.c.yimg.jp/i/g/rd-lohaco_w577449"}, {"rank": 49, "name": "味の素 経口補水液 アクアソリタ 500mL 1セット（48本入り）【 熱中症対策 経口補水 栄養ドリンク スポーツドリンク 】", "price": 8470, "qty": 0.5, "unit": "L", "per_unit_price": 16940.0, "evidence": "500mL 1セット", "reviews": 27, "stars": 4.89, "shop": "LOHACO by アスクル", "url": "https://lohaco.yahoo.co.jp/store/h-lohaco/item/j530671/", "image": "https://item-shopping.c.yimg.jp/i/g/rd-lohaco_j530671"}]}, "main_unit": {"unit": "L", "unit_label": "1L", "median": 428.25, "low": 220.0, "n": 55}, "answer": "2026-09-19、経口補水液がいちばん安いのは1Lあたり220円（楽天市場・【2ケース】経口補水液 エブリサポート経口補水液ORS+ 5・5,280円で24L）。ふつうは1Lあたり428円です。"}