The once-a-day one
MK-7 (menaquinone-7)
Stays in your body longer, so one small dose a day does the job.
Good for: Strong bones
What variations of vitamin K2 exist?
Helps direct calcium into bones and teeth rather than arteries. Often paired with vitamin D3. It comes in 3 forms, and they aren't all the same. Here's how they differ.
For education only. What's right for you depends on your health and your medications, so check with your provider before you start or switch. Book a consult
Our top pick
Every form, in plain words
The once-a-day one
MK-7 (menaquinone-7)
Stays in your body longer, so one small dose a day does the job.
Good for: Strong bones
The several-times-a-day one
MK-4 (menatetrenone)
Wears off quickly. Studied at high amounts for bones, which means several doses a day.
Good for: Strong bones
Usually skip
- The leafy-green one (K1 (phylloquinone))The kind in leafy greens. Your liver uses it mostly for blood clotting, not bones.
Spotting a good one on the shelf
Look for
- Look for 'MK-7' on the label (the once-a-day one)
Watch out for
- The label just says 'vitamin K2' without naming MK-7 or MK-4
Check with your provider first if…
- You take warfarin or another blood thinner that works against vitamin K. Avoid K2 unless your prescriber says it's OK.
- You have a blood clotting disorder
In Dr. Lesher's store
2 products in Dr. Lesher's dispensary have vitamin K2. Here's which form, where the label says.
Check with your provider before taking any of these, especially if you're pregnant or take medications.
MegaFood
Baby & Me 2™
Has MK-7 (the once-a-day one), good for strong bones
15 mcg per serving
MegaFood
Baby & Me 2™ Postnatal Multi
Has MK-7 (the once-a-day one), good for strong bones
7.5 mcg per serving
Ready to find the root cause?
Dr. Lesher is a Naturopathic Doctor who focuses on autoimmune and chronic conditions in women. Since 2020, she's helped hundreds of patients stop managing symptoms and start healing.