MK4 v MK7

[Daniel]

Hey @naslam1603 ,

It’s a good question with a little nuance to it:

Both MK-4 and MK-7 are vitamin K2, but MK-7 has a clear edge. It stays in your blood for days, so even small daily doses keep levels steady. Studies show MK-7 not only strengthens bones but also helps protect the heart by keeping arteries flexible and reducing calcium build-up. That doesnt mean MK-4 won’t give you the cardiovascular protection, but it’s less researched.

Research dossages in studies on mk-4 are however much higher (45 mg compared to 90-180 mcg for mk-7). I dont think there are many supplements providing this amount of mk-4. That’s why i usually advise people mk-7. MK-7 can also convert to MK-4 in certain tissues of the body, however, the other way around will not happen.

Does that answer help you?

[naslam1603]

Yes, this is indeed very helpful Daniel. My next question, have you come across a liquid version of Vitamin D K2 MK7. I would like to switch, but can’t find one.

[Daniel]

Hey @naslam1603 ,

Depending on the vitamin D dosages you are looking for, you could look into the next brands:
– Metagenics (just click here)
– Sunday’s Naturals (just click here)

I think the last one would be the best choice. It has the MK-7 in the right form (the trans-isomer), and you can choose different strengths. Metagenics uses the brand MenaQ7 to deliver their MK-7 and MenaQ7 uses the trans-isomer as well, but Metagenics didn’t put it on their bottle. Metagenics is a brand with a good reputation, however I couldn’t find a public report about screening for heavy metals and other polutants. I could find such a report for Sunday’s Naturals… However I’m not sure if you could order this in the UK.

Both use MCT oil as a carier oil to transport these vitamins into the body.

[naslam1603]

Hi Daniel,

Out of curiosity, I was just looking up my last Vitamin D reading. It was from November 2024 – 118.4 nmol/L.

I might be able to get hold of it from

https://www.sunday-natural.co.uk/

sunday-natural.co.uk

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[Daniel]

Hey @naslam1603 ,

That’s great! Any reason why vitamin K2 on to your radar?

[naslam1603]

Good morning Daniel,

I started taking K2 since becoming aware of functional medicine in 2019 and reading up in your course. However, I didn’t realise about MK4 and MK7 out there.