Jarrow Formulas MK-7 Review

MK-7 (menaquinone-7) is an enhanced bioactive form of vitamin K2, also known as menaquinone. MK-7 from natto is much better absorbed than K1 from spinach. MK-7 is responsible for the carboxylation of specific bone proteins needed for building bone and helps the body properly utilize calcium.

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Product Focus: TeethAlso covers:Bones

Tier ⓘ

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Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →

Evidence ⓘ

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How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.

Positive Reviews

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Biohacker Mentions

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Study, Trial or Testing Result SummaryMembersHuman studies

studies in people have tested vitamin K2 for teeth or gum . The only study we found was done in rats, people. …

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Review Totals and SummaryMembers6,572 reviews

6,572 reviews · Amazon 5,045 · Walmart 1,456 · Swanson Vitamins 68 · Target 3

Jarrow Formulas MK-7 has garnered attention, with approximately 6572 ratings across various stores. The vast of these, of reviews with stars, are , indicating customer with the product itself. **What it did for them** customers report outcomes from taking Jarrow Formulas MK-7. …

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Biohacker SummaryMembersWhat our biohacker panel says

Vitamin K, mainly as K2, is the focus for ten panelists: four take it daily, two it outright, and the rest stay while still discussing its value. Those who give a dose take 90 to 100 micrograms in the morning, and two of them name the MK-7 form, for general , longevity and keeping levels up. …

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RAL SummaryMembersThe tier and why

This product is placed in this tier because of its 6572 reviews are . The only research on vitamin K2 for teeth is one rat study that found for gum disease.

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More DetailsMembersBody systems · Combine with · Possible side effects

Body systems: Skeletal system, Oral and dental . Combine with and possible side are for members.

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Supplement FactsVitamin K2 90 mcg

Supplement Facts

Serving Size 1 Softgel

Servings Per Container 60

Amount Per Serving% Daily Value

Vitamin K2 (as natural MK-7 [Menaquinone-7])

90 mcg

†

† Daily Value not established.

Directions: Suggested Use for Bone Health: Adults and health-conscious individuals can add this bone health supplement to their daily regimen by taking 1 softgel by mouth of this Jarrow MK7 vitamin K-2 supplement per day

Barcode (UPC) 790011300014 · Label source: Jarrow · Report a label change

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Graded October 23, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.