Vitamin D Warning: 4 Symptoms You Shouldn’t Ignore
Vitamin D is essential for healthy bones, muscles, and calcium absorption. But taking too much vitamin D through supplements can cause harmful calcium buildup in the blood, known as hypercalcemia.
A headline saying everyone should stop vitamin D immediately is misleading. The important distinction is between symptoms caused by excessive supplementation and symptoms caused by an unrelated health problem.
The 4 warning symptoms
Excess vitamin D can raise blood calcium levels, causing nausea, vomiting, and loss of appetite.
These can be signs of elevated calcium and dehydration, which may occur with vitamin D toxicity.
High calcium levels may cause weakness, tiredness, and difficulty with normal activities. These symptoms have many possible causes, so testing may be needed.
Constipation and abdominal symptoms can occur when blood calcium is too high. Excess vitamin D can also contribute to kidney stones and kidney damage.
Should you stop taking vitamin D?
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If you have these symptoms and may be taking too much: Contact a healthcare professional promptly. They may advise pausing the supplement and checking your blood calcium and vitamin D levels.
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If your doctor prescribed vitamin D for a deficiency or another condition: Do not permanently discontinue prescribed treatment without medical advice.
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If you have confusion, severe vomiting, marked weakness, or an abnormal heartbeat: Seek emergency medical care.
For most adults, 4,000 IU (100 micrograms) per day is the general upper intake limit for routine unsupervised use—not a recommended dose for everyone. Doctors sometimes prescribe higher doses temporarily to treat a deficiency under supervision.
Vitamin D toxicity is uncommon and is usually caused by excessive supplementation, not ordinary food intake or sunlight.
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How much vitamin D are you taking?
2. Was it prescribed?
3. Do you have any of the symptoms above?
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