2 RCTs on hypertension on this page
Role of vitamin d supplementation in hypertension.
Indian J Clin Biochem. 2011 Jan;26(1):88-90. Epub 2010 Dec 29.
Goel RK, Lal H.
Departments of Medicine and Biochemistry, Maharaja Agrasen Medical College, Hisar, Agroha, 125047 Haryana India.
Role of Vitamin D supplementation was studied in patients with hypertension. One hundred hypertensive patients (group I) were given conventional antihypertensive drugs while another 100 patients (group II), in addition, were supplemented with Vitamin D(3) (33,000 IU, after every 2 weeks, for 3 months). Besides diastolic and systolic blood pressure, serum calcium, phosphorous, alkaline phosphatase, albumin, albumin-corrected calcium, and 24 h urinary creatinine levels were estimated in both the groups before the start of treatment and after 3 months.
Vitamin D supplementation showed a more significant decrease in systolic blood pressure. This group also showed a significant increase in serum calcium as well as albumin-corrected calcium with a decrease in phosphorous.
Results of the study confirm that Vitamin D supplementation has a role in reducing blood pressure in hypertensive patients and that it should be supplemented with the antihypertensive drugs. More extensive studies with a larger group, to draw a definite conclusion, are in progress.
3,000 IU reduced central systolic BP decreased significantly
Effect of cholecalciferol supplementation during winter months in patients with hypertension: a randomized, placebo-controlled trial.
Am J Hypertens. 2012 Nov;25(11):1215-22. doi: 10.1038/ajh.2012.111. Epub 2012 Aug 2.
Larsen T, Mose FH, Bech JN, Hansen AB, Pedersen EB.
Department of Medical Research, Holstebro Hospital, Holstebro, Denmark. thomalse at rm.dk
BACKGROUND: Low 25-hydroxy-vitamin D (25(OH)D) levels are inversely related to blood pressure (BP) and have been associated with incident hypertension. In people living at northern latitudes diminished cholecalciferol synthesis in the winter increases the risk of vitamin D deficiency. We wanted to test the hypothesis that daily cholecalciferol supplementation in the winter lowers BP in patients with hypertension.
METHODS: We investigated the effect of 75 µg (3,000 IU) cholecalciferol per day in a randomized, placebo-controlled, double-blind study in 130 hypertensive patients residing in Denmark (56º N). Ambulatory BP (24-h BP) and arterial stiffness were measured before and after 20 weeks of treatment, that took place between October and March.
RESULTS: A total of 112 patients (mean age 61 ± 10) with a baseline p-25(OH)D of 23 ± 10 ng/ml completed the study.
Compared with placebo, a nonsignificant 3/1 mm Hg (P = 0.26/0.18) reduction was found in 24-h BP. In patients with vitamin D insufficiency (<32 ng/ml) at baseline (n = 92), 24-h BP decreased by 4/3 mm Hg (P = 0.05/0.01). Central BP (CBP) estimated by applanation tonometry and calibrated with a standardized office BP was reduced by 7/2 mm Hg (P = 0.007/0.15) vs. placebo.
No differences in carotid-femoral pulse wave velocity (PWV) or central augmentation index (AIx) were found between treatment arms.
CONCLUSIONS: Cholecalciferol supplementation, by a dose that effectively increased vitamin D levels, did not reduce 24-h BP, although central systolic BP decreased significantly. In a post-hoc subgroup analysis of 92 subjects with baseline p-25(OH)D levels <32 ng/ml, significant decreases in 24-h systolic and diastolic BP occurred during cholecalciferol supplementation.
See also VitaminDWiki
- Overview Hypertension and vitamin D
- All items in category Hypertension 44 items
- 3000 IU reduced hypertension for the vitamin D insufficient – RCT Aug 2012
- Hypertension 30 percent more likely if low vitamin D – meta-analysis March 2013
- Proof that Vitamin D Works Hypertension is one of many diseases proven to be treated by vitamin D
- Faster heart rate and higher systolic blood pressure associated with low vitamin D – Jan 2010
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