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Folic acid helps maintain normal levels of serotonin .

叶酸有助于维持正常的5-羟色胺水平。

Take a multivitamin with folic acid .

吃一种具有叶酸的复合维生素。

Nor did folic acid intake in early pregnancy , he added .

他补充道，怀孕初期服用叶酸也没有问题。

This discovery is consistent with reports that unmetabolised folic acid is found in human blood and urine .

这一发现与在人体血液和尿液中发现未转化叶酸的报导是相一致的。

B12 and folic acid together are needed for making normal cells , including blood cells .

维生素b12和叶酸都是合成细胞所必需的，其中也包括血细胞。