[KongchangAI]
Unverified82% confidenceTradeoffTime unknown

活性甲基叶酸(5-MTHF)吸收利用率高、无掩盖B12风险,但价格通常是普通叶酸的3-5倍;对无基因变异的普通备孕人群,普通合成叶酸(400μg)已足够且循证证据最充分(大规模RCT均基于合成叶酸)

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