Vitamin D supplementation does not appear to reduce blood pressure in patients with hypertension

Vitamin D supplementation does not appear to improve blood pressure or markers of vascular health in older patients with isolated systolic hypertension , according to a study by Miles D. Witham, Ph.D., of the University of Dundee, Scotland, United Kingdom, and colleagues.

http://medicalxpress.com/news/2013-08-vitamin-d-supplementation-blood-pressure.html