NCT01019785.

Study name	Vitamin D during In Vitro Fertilisation (IVF) ‐ a prospective randomised trial delivery
Methods	Randomised double‐blind trial
Participants	Target sample size: 1000 women > 18 years of age initiating IVF treatment in Sweden
Interventions	Dietary supplementation: ergocalciferol (vitamin D), either high (100,000 U) once or low‐dose (500 U once)
Outcomes	Biochemical pregnancy, live birth, take‐home baby rate, OHSS and pregnancy complication rate (pregnancy, hypertension, SGA, diabetes)
Starting date	November 2009
Contact information	Pelle G. Lindqvist Karolinska University Hospital Huddinge ClinicalTrials.gov identifier NCT01019785.
Notes	clinicaltrials.gov/ct2/show/NCT01019785?term=NCT01019785&rank=1