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Why does your prenatal conatin 4,000 IU's of vitamin D?Updated a year ago

Vitamin D can help optimize l fertility and support fetal development and pregnancy outcomes . A double-blind, randomized clinical trial found Vitamin D supplementation of 4,000 IU/day for pregnant women safe and the most effective way to achieve sufficiency in all women and their babies regardless of race or climate (even the sunniest climates).*

Hollis BW, Johnson D, Hulsey TC, Ebeling M, Wagner CL. Vitamin D supplementation during pregnancy: Double-blind, randomized clinical trial of safety and effectiveness. J Bone Miner Res. 2011;26:2341–57.

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