Vitamin A Toxicity

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Toxicity of Vitamin D

In 1999, Vieth indirectly asked the medical community to produce any evidence 10,000 units of vitamin D a day was toxic, saying, “Throughout my preparation of this review, I was amazed at the lack of evidence supporting statements about the toxicity of moderate doses of vitamin D”. He added, “If there is published evidence of toxicity in adults from an intake of 250ug (10,000 IU)/d, and that is...

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A nontoxic case of vitamin D toxicity.

Vitamin D toxicity also known as hypervitaminosis D was previously believed to be rare. But with an increase in vitamin D supplementation several cases have been reported in literature. Fat soluble vitamins like Vitamin D, due to their ability to accumulate in the body, have a higher potential for toxicity than water soluble vitamins. The main clinical consequence of vitamin D toxicity is hyper...

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Pharmacokinetics of vitamin D toxicity.

Although researchers first identified the fat-soluble vitamin cholecalciferol almost a century ago and studies have now largely elucidated the transcriptional mechanism of action of its hormonal form, 1alpha,25-dihydroxyvitamin D(3) [1alpha,25(OH)(2)D(3)], we know surprisingly little about mechanisms of vitamin D toxicity. The lipophilic nature of vitamin D explains its adipose tissue distribut...

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Vitamin D toxicity redefined: vitamin K and the molecular mechanism.

The dose of vitamin D that some researchers recommend as optimally therapeutic exceeds that officially recognized as safe by a factor of two; it is therefore important to determine the precise mechanism by which excessive doses of vitamin D exert toxicity so that physicians and other health care practitioners may understand how to use optimally therapeutic doses of this vitamin without the risk...

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Acute vitamin A toxicity: a report of three paediatric cases.

The following report describes three paediatric cases of vitamin A toxicity secondary to carnivorous fish liver ingestion. Further discussion of vitamin A toxicity and management of toxicity is included.

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ژورنال

عنوان ژورنال: Bulletin of the Association of Reptilian and Amphibian Veterinarians

سال: 1991

ISSN: 1076-3139

DOI: 10.5818/1076-3139-1.1.2b