Vitamin A will kill you if you consume too much, because it's a fat-soluble vitamin, while beta carotene (a substance that your body processes into Vitamin A) is water-soluble and thus you can have as much as you'd like and the excess is just excreted in urine.
On that note, polar bear liver has so much Vitamin A that people die from eating it.
On that note, polar bear liver has so much Vitamin A that people die from eating it.