Important Warning from Doctors: Stop Taking Vitamin D Immediately If You Have These 4 Symptoms

If you’re looking for the details behind this headline, the claim needs an important correction: people should not automatically stop vitamin D just because they develop one of these symptoms. Vitamin D toxicity is uncommon and usually results from excessive supplementation. The symptoms are generally caused by excessively high calcium levels.

4 warning symptoms that can occur with too much vitamin D

1. Persistent nausea or vomiting — can occur when vitamin D intake becomes excessive.
2. Unusual muscle weakness — particularly when accompanied by other symptoms of high calcium.
3. Excessive thirst and frequent urination — can occur because elevated calcium affects the kidneys.
4. Confusion or difficulty thinking clearly — can be a sign of significant hypercalcemia and warrants medical assessment.

Other possible warning signs include poor appetite, constipation, unexplained weight loss, dehydration, kidney stones, and abnormal heart rhythms. Severe vitamin D toxicity can damage the kidneys.

What should you do?

If you’re taking vitamin D and develop several of these symptoms, contact your doctor or pharmacist rather than simply stopping a prescribed treatment on your own. They may check your vitamin D and calcium levels and review your dose and other supplements.

For adults, the usual tolerable upper intake level from food and supplements is 4,000 IU (100 mcg) per day, although higher doses may be medically prescribed for treating deficiency and are then monitored.

A better headline would be:
“4 Warning Signs of Too Much Vitamin D—and When to Contact Your Doctor”