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Vitamin A Toxicity
What happens if too much vitamin A?
Getting too much preformed vitamin A (usually from supplements or certain medicines) can cause dizziness, nausea, headaches, coma, and even death. High intakes of preformed vitamin A in pregnant women can also cause birth defects in their babies.

Mental status changes are common following Vitamin A intoxication. In addition, there is a risk for seizures, headache, and blurred vision (due to elevated intracranial pressure). Chronic toxicity can lead to alopecia, anorexia, pruritus, dryness of mucous membranes, muscle and bone pain and hyperlipidemia.

How do you know if you have vitamin A toxicity?
Signs and symptoms of acute vitamin A toxicity can include: Gastrointestinal: nausea, vomiting, loss of appetite, abdominal pain. Neurological: dizziness, irritability, drowsiness, increased intercranial pressure due to cerebral oedema, and headache. Dermatological: rash or desquamation (peeling skin)

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Can vitamin A toxicity be reversed?
A person can often reverse hypervitaminosis A by stopping taking excess amounts of vitamin A. This may mean that they can no longer take multivitamins or vitamin A supplements. If there are no complications, a person will usually recover quickly.

How long does vitamin A stay in your body?
The liver stores vitamins and minerals for the times when they may be lacking in the diet. It can store enough vitamin A and vitamin B12 for four years, and enough vitamin D for four months.

How do you get rid of excess vitamin A?
The most effective way to treat this condition is to stop taking high-dose vitamin A supplements. Most people make a full recovery within a few weeks. Any complications that occurred from the excess vitamin A, such as kidney or liver damage, will be treated independently.