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The absolute upper limit of Vitamin A is 10,000 international units per day for an adult. It's much less than that for someone under 18, and for a one-year-old the absolute maximum is 1000 units per day. Vitamin A is one vitamin you absolutely must not, whatever you do, overdose on. It can kill you dead if you take too much of it.

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14y ago
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14y ago

10,000 IU is the maximum per day dose you can safely consume for years.
for reference, around 1,000,000 IU in a day would kill you and several hundreds of thousands of IU consumed for too many months would destroy your internals.

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Q: What is the maximum amount of vitamin a per day?
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