Can vitamin D3 cause high blood pressure?
Ava Arnold
Updated on March 02, 2026
The results of subgroup analysis from Wei Zhen's meta-analysis published in 2017 showed that oral vitamin D 3 supplementation could reduce the systolic and diastolic blood pressure levels in patients with essential hypertension, but could not affect the blood pressure level in people without hypertension.
Does taking vitamin D affect blood pressure?
Sellers of vitamin D claim the nutrient can lower your blood pressure. But don't believe the hype. According to cardiologist Steven Nissen, MD, despite claims from the nutrition industry and non-medical personnel about vitamin D's ability to lower blood pressure, no quality scientific study can confirm these benefits.What are the negative effects of too much vitamin d3?
The main consequence of vitamin D toxicity is a buildup of calcium in your blood (hypercalcemia), which can cause nausea and vomiting, weakness, and frequent urination. Vitamin D toxicity might progress to bone pain and kidney problems, such as the formation of calcium stones.Can calcium and vitamin D cause high blood pressure?
These data suggest that vitamin D and calcium somehow work together to cause a reduction in blood pressure and that high levels of calcium promote the blood pressure reducing action of vitamin D.Who should not take vitamin D3?
Who should not take VITAMIN D3?
- sarcoidosis.
- high amount of phosphate in the blood.
- high amount of calcium in the blood.
- excessive amount of vitamin D in the body.
- kidney stones.
- decreased kidney function.
Why Does Vitamin D Lower Blood Pressure
Does vitamin D3 help with high blood pressure?
Vitamin D deficiency may be linked to heart disease and an increased risk of high blood pressure (hypertension). However, recent research casts doubt on whether taking a vitamin D supplement reduces the risk of heart attack or stroke.Is it OK to take vitamin D3 everyday?
Most experts recommend that you shouldn't take more than 4,000 IU of vitamin D a day. When your serum D3 is very low (less than 12 nanograms per milliliter), some may recommend a short course of once-weekly 50,000 IU of vitamin D2 or D3, followed by a usual dose of 600 to 800 IU daily.How do I know if I'm taking too much vitamin D?
Symptoms and treatment of vitamin D toxicityEarly symptoms of hypercalcemia include nausea, vomiting, diarrhea, constipation, and weakness ( 27 ). Excessive thirst, an altered level of consciousness, high blood pressure, calcification in the kidney tubes, kidney failure, or hearing loss may also develop ( 4 , 28 ).
Can I take 5000 IU of vitamin D3 everyday?
In summary, long-term supplementation with vitamin D3 in doses ranging from 5000 to 50,000 IUs/day appears to be safe.Is vitamin D3 good for your heart?
Healthier blood vesselsThe study showed that vitamin D3 can repair damage to the heart and blood vessels caused by high blood pressure.