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Comment by look_lookatme | Hacker News Reader

It is my understanding that vitamin K2 should be taken with vitamin D in order to mitigate calcium overload. I do not know what the appropriate dosages between the two are, however, and I just pop one with the other every other day.

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Vitamin K2 is definitely an essential vitamin for bone health and calcium regulation, but it won't counteract high dose Vitamin D. If you are on so much Vitamin D that your calcium is elevated (meaning, you are at a toxic dose of Vitamin D), Vitamin K2 is not going to help. The best thing to do is actually check your Vitamin D levels if you are planning on staying on high dose Vitamin D.

Any ballmark suggested amount of K2 per 1000 IU of D? The supplement I'm currently taking is 100mcg of D3 with 75mcg of MK7 K2.

Just do this under the care and monitoring of a physician. That's really the whole point of the linked article, that Vitamin D has achievable toxicity levels and is fat soluble. Don't mess around and self-medicate. That's true for almost anyone.

My approach is similar - I take 2-3 1000 IU Vitamin D pills every couple of days, sometimes just one, and a K2 a few times a week. My hope is that staggering it out will help me to have more D than the deficient level without overwhelming my system. Now, at least I know what to worry about...

The consensus seems to be around 20mcg K2 Mk.7 all-trans per 1000 IU of D3.

> The consensus seems to be around 20mcg K2 Mk.7 all-trans per 1000 IU of D3.

Source? My doctor prescribed 45mcg K2 per 1000 IU of D3.

1-2 mg MK-4 and 100-200 mcg MK-7 per 10,000 IU..

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