Evaluation of vitamin D supplementation doses during pregnancy in a population at high risk for deficiency.

Aim/background: Vitamin D supplementation during pregnancy is a well-accepted recommendation worldwide; however, the debate about the correct dose is ongoing. We aimed to compare daily doses of 600, 1,200, and 2,000 IU in this randomized, controlled study.

Methods: The study group consisted of 91 pregnant women aged 16-42 years admitted to Kocaeli Maternity and Children Hospital between April 2011 and April 2012.