Assessment of Dose Effectiveness of Vitamin D Supplementation During Pregnancy- a Dose Comparison Trial

The study is randomized blinded trial of Vitamin D supplementation to pregnant women; the study participants will receive Vitamin D in supplement form. Pregnant women will be individually randomized to three groups receiving a dose of 400, 2000 and 4000 IU/ day till the time of delivery.A blood sample will also be collected from the participant at the time of recruitment /before the starting of the supplementation for the assessment of Calcium, Phosphorus, Alkaline Phosphatase and Vitamin D levels. The second blood sample for vitamin D level to assess vitamin D status will be done after completion of the supplementation phase at the time of delivery (till 48 hours of delivery). The samples will be sent to Aga Khan University laboratory