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Depends on how well you absorb it personally.

For instance, if you're deficient, you need more.

If you're older you need more.

If you have a darker skin color you need more.

It's fairly hard to get toxicity (still to be avoided).

I take 50k IU per week and is good enough for me. Fat soluble so don't need it every day. But, don't take my advice on specifics...




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