Too much vitamin A can be harmful. Even a single large dose — over 200,000 mcg — can cause: Nausea. Vomiting.
How much vitamin A IU is toxic?
The most common cause of chronic vitamin A toxicity is the regular ingestion of over 100,000 IU daily, which is sometimes prescribed for dermatological conditions such as acne.
How much vitamin A is toxic to the liver?
Normal doses of vitamin A are not associated with liver injury or liver test abnormalities, but higher doses (generally more than 40,000 IU daily, ~12,000 μg) can be toxic.
Can I overdose on vitamin A?
Vitamin A is a fat-soluble nutrient that is naturally present in many foods, like beef, eggs and many fruits and vegetables. An overdose of this vitamin can lead to problems with confusion, hair loss, liver damage and bone loss.
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