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Hypervitaminosis D



Hypervitaminosis D is a condition that occurs after taking excessive doses of vitamin D.

Alternative Names

Vitamin D toxicity


An excess of vitamin D causes abnormally high levels of calcium in the blood, which can eventually severely damage the bones, soft tissues, and kidneys. It is almost always caused by forms of vitamin D that require a doctor's prescription.

Signs and tests

Tests to confirm the diagnosis:

Support Groups

Expectations (prognosis)

Recovery is expected.

Calling your health care provider

Call your health care provider if:

  • You or your child shows symptoms of hypervitaminosis D and has been taking more vitamin D than the recommended daily allowance
  • You or your child shows symptoms and has been taking a prescription form of vitamin D
  • Dehydration
  • Hypercalcemia
  • Kidney damage
  • Kidney stones

Stop takingĀ vitamin D. Consult your physician. In severe cases, other treatment may be necessary.


To prevent this condition, pay careful attention to the correct vitamin D dose.

Review Date: 11/23/2009
Reviewed By: Ari S. Eckman, MD, Division of Endocrinology and Metabolism, Johns Hopkins School of Medicine, Baltimore, MD. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
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