[beardface]

I would advise taking a K2 MK7 supplement with D3, or get a supplement that contains both. Personally, I take one capsule a day that contains both 3000IU of D3 and 100μg of K2 MK7.

D3 by itself can cause high calcium levels, to the point of toxicity in very high doses. The K2 moves the calcium from the blood to bones.

[throw_me_a_whey]

>D3 by itself can cause high calcium levels

I developed a calcification in my arm due to this. My wrist was in pain and I couldn't bend it. Got an x-ray, and boom: what looked like a little ball of bone had appeared.

Stopped taking D3 immediately and my body reabsorbed it, never had it again.

Funny enough, it happened when I was visiting Paris. Got to use Google Translate to explore the French medical system. Fantastic service, people aren't joking! :)

[gumby]

> Personally, I take one capsule a day that contains both 3000IU of D3

Not sure how much D3 you're getting (though starting with 3K IU is a lot) because it's not clear how much gets through the gut. You might want to take some cod liver oil (Ω3 capsules) at the same time -- the fat is believed to improve the still mysterious absorption process.

Typical dosage is a drop of cholecalciferol suspension under the tongue for direct absorption.

[TedDoesntTalk]

I take LifeExtension K2 MK7. It's quite inexpensive and LifeExtension is reputable brand.

[mixmastamyk]

The Japanese recipe for fermented soybean, called Natto is an abundant natural source. Not easy to find in the US though. I've found it offline at Japanese groceries and one boutique grocer at an exorbitant price so far.

[wizofaus]

Rather an acquired taste though. I don't mind it (though have never gone out of my way to find it); my Japanese partner can't stand it.

[moffkalast]

Can't we just get D3 without calcium?