Hypervitaminosis D is a condition that occurs after taking very high doses of
Vitamin D toxicity
The cause is excess intake of Vitamin D. The doses need to be very high, far above what a medical provider would normally prescribe.
There has been a lot of confusion caused by internet articles about Vitamin D supplementation. It is extremely unusual for anybody to need more than 2000 IU of Vitamin D a day.
For most people, Vitamin D toxicity only occurs with Vitamin D doses above 10,000 IU per day.
An excess of vitamin D causes abnormally high levels of calcium in the blood (hypercalcemia). This can severely damage the kidneys, soft tissues, and bones over time.
Constipation Decreased appetite(anorexia) Dehydration Fatigue Irritability Muscle weakness Vomiting
Exams and Tests
- Excess calcium in the blood (
- Excess calcium in the urine (hypercalciuria)
- Excessive thirst (
polydipsia) High blood pressure
- Passing large amounts of urine (
Tests to confirm the diagnosis:
- 1,25-dihydroxy vitamin D levels
25-hydroxy vitamin D levels Serum calcium Serum phosphorus X-ray of the bone
Stop taking vitamin D. Talk to your health care provider. In severe cases, other treatment may be needed.
Recovery is expected.
- Kidney damage
- Kidney stones
When to Contact a Medical Professional
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
To prevent this condition, pay careful attention to the correct vitamin D dose.