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If these are the only vitamins you are taking, then this may not be enough. I would however not recommend taking this since it is right for a child, but not for an adult, especially a pregnant woman. You need to take prenatal vitamins, which are formulated for pregnant women, and their needs. Your doctor can recommend a specific brand. You can read more about prenatal vitamins here
http://www.babycenter.com/refcap/pregnancy/pregnancynutrition/287.html
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