RESUMO
To look into the significant controversy existing about the safety and the dose of vitamin D supplementation in pregnant women with a pandemic of vitamin D deficiency. We searched PubMed for information on Vitamin D, with special emphasis on reviews and studies regarding pregnancy. Recent clinical research sheds doubt on the prevalent guidelines, by proposing that the circulating 25 hydroxy vitamin D should be 40-60ng/ml [100-150 nmol] during pregnancy and a daily intake of 4000IU vitamin D3 is required to attain this circulating level. A search of the existing literature shows Vitamin D supplementation well above the current guidelines to be not just safe in pregnant patients, but also beneficial in preventing various adverse outcomes. There is a pressing need for further studies in this field in different populations, to establish accurate guidelines on Vitamin D levels in pregnancy.