Hypervitaminosis A

Alternative Names

Vitamin A toxicity

Definition of Hypervitaminosis A

Hypervitaminosis A is having too much vitamin A in the body.

Causes, incidence, and risk factors

There are two types of vitamin A hypervitaminosis:


Treatment involves simply stopping the use of too much vitamin A.

Expectations (prognosis)

Most people fully recover.


David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc. – 5/23/2010

Vitamin A source

ADAM Medical Encyclopedia

Article written by

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