How Much Is Too Much Vitamin D?
There is such a thing as too much vitamin D. Vitamin D in excess of 4,000 IU can cause side effects such as anorexia, excessive urine output, heart arrhythmias, and kidney stones. Excess vitamin D is usually caused by taking too much in the form of supplements. It is not possible to get too much vitamin D from sun exposure – the body regulates the amount it produces.
Vitamin D Overdose Side Effects
Hypervitaminosis D occurs when people take too many vitamin D supplements. When there is too much vitamin D in the body, calcium levels rise and can lead to hypercalcemia. Symptoms of hypercalcemia include:
- Excessive urine output
- Heart arrhythmias
- Excessive thirst
- Muscle weakness
- Vomiting, nausea, and dizziness
- High blood pressure
Organs Damaged by Long-Term Vitamin D Toxicity
- Blood vessels