Symptoms and Presentation
Symptoms of vitamin D poisoning include:
- Dehydration
- Vomiting
- Decreased appetite
- Irritability
- Constipation
- Fatigue
- Muscle weakness
An excess of vitamin D causes abnormally high blood concentrations of calcium (hypercalcemia), which can cause overcalcification of the bones, soft tissues, heart and kidneys. It can also damage the kidney and produce kidney stones. In addition, hypertension can result. Ongoing research indicates antagonism with oil soluble menatetrenone, MK-4, an internally transported natural form of vitamin K2, which is associated with bone formation and calcium retention in the bones.
Hypervitaminosis D symptoms appear several months after excessive doses of vitamin D are administered. In almost every case, a low calcium diet combined with corticosteroid drugs will allow for a full recovery within a month.
Read more about this topic: Hypervitaminosis D
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