How high is too high for vitamin A? The definitive guide to hypervitaminosis A
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3 min read
According to the National Institutes of Health, the tolerable upper intake level (UL) of preformed vitamin A for adults is 3,000 mcg RAE (10,000 IU) per day. However, exceeding this amount, especially through supplements, can lead to a toxic condition known as hypervitaminosis A.
