2018 review: Vitamin D Toxicity from Overcorrection

[jimmylegs]

Development of Vitamin D Toxicity from Overcorrection of Vitamin D Deficiency: A Review of Case Reports (2018)
fft: https://www.mdpi.com/2072-6643/10/8/953/pdf

Abstract: Over the past two decades, vitamin D level measurements have become some of the most frequently ordered tests in the laboratory. This increase is due to a growing awareness of widespread vitamin D deficiency and scientific data suggesting the beneficial effects of vitamin D in various diseases. A literature search was carried out in PubMed for cases reporting vitamin D intoxication and overdose. Thirteen articles were included in this review. Intoxication was severe in the reported cases. Patients presented with serum vitamin D concentrations ranging between 150 and 1220 ng/mL and serum calcium concentrations between 11.1 and 23.1 mg/dL. Most of the reported patients showed symptoms of vitamin D toxicity such as vomiting, dehydration, pain, and loss of appetite. The underlying causes included manufacturing errors, overdosing by patients or prescribers, and combinations of these factors. Our literature search highlights the fact that even though vitamin D intoxication is rare, it does occur and therefore patients and prescribers should be more cognizant of the potential dangers of vitamin D overdose.

[ElliotB]

Anyone taking higher than normal doses of Vitamin D should be doing blood work every few months to monitor their D level and to avoid overdosing in order to reduce/eliminate vitamin D toxicity.

The best option if you are using moderate, high or extremely high doses is obviously to use a doctor who is trained in high dose Vitamin D therapy, but for lower doses that are above 'typical' your D level can easily be monitored without using a specialist. Regular monitoring will help you avoid vitamin D toxicity.

[jimmylegs]

including excretion, so users know exactly how much any megadose intake is disappearing down the toilet anyway.