Vitamin D and blood pressure:
Vitamin D level and hypertension: A vitamin D level is recommended for patients suspected of vitamin D deficiency which is assessed by using a blood test for the concentration of the compound 25(OH)D, and if vitamin D insufficient or deficient, a patient should obtain adequate vitamin D using a vitamin D3 supplement. Vitamin D supplements are known to lower blood pressure in patients with hypertension and low vitamin D levels. See the vitamin D section for further information.
Participants in a study received either standard antihypertensive drugs (n=100) or vitamin D3 (33,000 IU, every 2 weeks, for 3 months) in addition to standard therapy (n=100). After 3 months, results showed a reduction in systolic blood pressure (BP) of 7.5 mmHg with Vitamin D supplementation compared to a 3.6 mmHg reduction in the standard therapy group. Diastolic BP in both the Vitamin D group and non-Vitamin D group increased by 2.1 mmHg and 1.3 mmHg, respectively. Additionally, Vitamin D supplementation showed a significant increase in blood calcium levels as well as albumin-corrected calcium with a decrease in phosphorous. (44)