Vitamin K1
Quick Answer
What is the best form of Vitamin K1?
We compared 1 forms of Vitamin K1 in our formulary. Browse the comparison table below to find the best form for your goals.
All Forms of Vitamin K1
| Form | Tier | Bioavailability | Dose Range | Unit |
|---|---|---|---|---|
| Phylloquinone | T2 Specialist | S2 | — | — |
Bioavailability by Form
What is Vitamin K1?
Vitamin K1 is a Vitamin supplement available in 1 form.
Not all forms of Vitamin K1 are equal. The form you choose determines how much Vitamin K1 actually reaches your tissues, and the difference between the best and worst forms can be substantial. Vitamin K1 (phylloquinone) is the dietary form of vitamin K found in green leafy vegetables that primarily supports hepatic coagulation factor synthesis. Research supports vitamin K1 for promoting healthy blood coagulation protein activation and bone osteocalcin activity, serving as a foundational K vitamin alongside K2 forms.
Forms of Vitamin K1 Compared
Vitamin K1 (T2 Specialist) has a bioavailability rating of good (S2). Typical dose range: not yet documented in our database.
What the Research Shows
Vitamin K1 (phylloquinone) is the primary dietary form of vitamin K, predominantly found in green leafy vegetables. It is the form most directly involved in hepatic synthesis of clotting factors. While MK-7 has superior extrahepatic activity, K1 remains clinically important for individuals on anticoagulant therapy requiring precise dosing management.
How to Choose the Right Form
Multiple forms of Vitamin K1 are available. Start by comparing formulary tiers — T1 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 K1, 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.
Dosing Guidance
Dosing information not yet available for this ingredient.
Frequently Asked Questions
What is the best form of Vitamin K1?
How much Vitamin K1 should I take daily?
What are the benefits of Vitamin K1?
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What forms of Vitamin K1 are available?
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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.