ByDr. Brennan Commerford, D.C.·Last reviewed: May 2026
All Ingredients
Vitamin1 form

Vitamin K2 (MK-4)

Evidence Level
High Evidence

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Scored by absorption, bioavailability & formulary tier

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Quick Answer

What is the best form of Vitamin K2 (MK-4)?

We compared 1 forms of Vitamin K2 (MK-4) in our formulary. Browse the comparison table below to find the best form for your goals.

1forms compared

All Forms of Vitamin K2 (MK-4)

FormTierAbsorption ScoreDose RangeUnit
MK-4Customer Choice
17/100Basic

Absorption by Form

Basic
MK-4
17/100

What is Vitamin K2 (MK-4)?

Vitamin K2 (MK-4) is a Vitamin supplement available in 1 form.

Not all forms of Vitamin K2 (MK-4) are equal. The form you choose determines how much Vitamin K2 (MK-4) actually reaches your tissues, and the difference between the best and worst forms can be substantial. FormulaForge’s formulary ranks each form by bioavailability tier (S1–S4) and formulary tier (T1–T4), giving you a research-backed guide for choosing wisely.

Forms of Vitamin K2 (MK-4) Compared

Vitamin K2 (MK-4) (Customer Choice) has a bioavailability rating of low (S4 — basic). Typical dose range: not yet documented in our database.

How to Choose the Right Form

Multiple forms of Vitamin K2 (MK-4) are available. Start by comparing form ratings — Preferred Forms reflect the strongest bioavailability evidence, and S1-rated forms deliver the most active compound per dose unit.

The appropriate form depends on your individual goals and your healthcare provider’s recommendations. Consult a qualified professional before selecting a supplement form.

Dosing & Safety

For Vitamin K2 (MK-4), the typical dosing range is not yet documented in our database. Individual dose requirements vary based on health goals, body weight, and existing nutrient intake.

Side Effects: Specific side effect data for these forms is not yet documented in our database. In general, consult your healthcare provider regarding tolerability at higher doses.

These statements are based on structure/function research and have not been evaluated by the FDA. This information is not intended to diagnose, treat, cure, or prevent any disease. Always consult a qualified healthcare provider before starting or changing a supplement regimen.

The Science

The following studies and findings inform FormulaForge classifications for Vitamin K2 (MK-4):

PMID: 23140417

Dosing Guidance

Dosing information not yet available for this ingredient.

Frequently Asked Questions

What is the best form of Vitamin K2 (MK-4)?
Vitamin K2 (MK-4) is available in several forms. Focus on products that specify the form on the label — not all forms are equally absorbed by the body.
How much Vitamin K2 (MK-4) should I take?
Dosing for Vitamin K2 (MK-4) varies based on the specific form, your health goals, and individual factors. Consult a qualified healthcare provider for personalized guidance.
What does Vitamin K2 (MK-4) support?
Vitamin K2 (MK-4) is commonly used to support Vitamin. Research suggests it plays a role in several physiological pathways. As with all supplements, these statements have not been evaluated by the FDA and Vitamin K2 (MK-4) is not intended to diagnose, treat, cure, or prevent any disease.
Is Vitamin K2 (MK-4) safe?
Vitamin K2 (MK-4) is generally well-tolerated when taken at research-supported doses. As with any supplement, individual responses vary. Consult a qualified healthcare provider before use, especially if you are pregnant, nursing, have a medical condition, or take medications. These statements have not been evaluated by the FDA.

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References

  1. PubMed

FormulaForge formulates and sells supplements containing the ingredients discussed on this page. Our formulary recommendations are based on peer-reviewed bioavailability research. All cited studies are independently verifiable.