这玩意多吃又没坏处。。。就算你不怀孕，吃叶酸也没什么。叶酸主要是蔬菜里来的。

微克。。。Overdose risks The risk of toxicity from folic acid is low, because folate is a water-soluble vitamin and is regularly removed from the body through urine.[62] The Institute of Medicine has established a tolerable upper intake level (UL) for folate of 1 mg for adult men and women, and a UL of 800 µg for pregnant and lactating (breast-feeding) women less than 18 years of age. Supplemental folic acid should not exceed the UL to prevent folic acid from masking symptoms of vitamin B12 deficiency.[63] There is growing concern worldwide that prenatal high folic acid in the presence of low vitamin b12 causes epigenetic changes in the unborn predisposing them to metabolic syndromes, central adiposity and adult diseases such as Type 2 diabetes. Another active area of research and concern is that excess folic acid in utero causes epigenetic changes to the brain leading to autism spectrum disorders.

我的是一板5mg,800mg要160板！！800ug是接近两颗看来偶尔多吃一颗半颗问题不大。

每天一粒正常吧，我医生也是这样给我开的借贴问一下，之前因为有些褐色的分泌物，医生给开了孕酮，就两天就没有了，所以就吃了几天，最近因为有些反胃就没再吃开的药了，应该没事吧，我老公一直碎碎念，搞得我很紧张，还需要继续吃下去吗？