Unverified88% confidenceFactTime unknown

维生素D3吸收利用率优于D2，成人日常补充400-800IU、缺乏人群可短期2000IU；D3脂溶性建议随含脂餐食服用

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88%

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Long-term

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营养保健品category

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Unverified维生素D3的吸收利用率显著高于D2，选购时优先看成分表标注为cholecalciferol(D3)而非ergocalciferol(D2)，成人每日400-800IU即可，缺乏人群可短期用2000IU93% similar Unverified维生素D3的生物利用度显著优于D2，选购时认准成分表标注为cholecalciferol（D3），日常补充剂量400-800IU即可满足成人需求，缺乏人群治疗剂量可达1000-2000IU/天90% similar Unverified含有维生素D3（约1000IU/粒），若已额外补充维D需注意总摄入量避免过量90% similar

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