Ingredient form · Vitamin K

Vitamin K1

Rating: Average
Multiplier: ×1
Rank among Vitamin K: 4 of 7
Updated: 1 Sept 2026

How Vitamin K1 compares

VersusVitamin K2 MK-7×1.5Absorbs better in our grading, at ×1.5.VersusVitamin K2 MK-7 (fermented)×1.5Absorbs better in our grading, at ×1.5.VersusVitamin K2 MK-4×1.25Absorbs better in our grading, at ×1.25.VersusMenaquinone 4×1Graded the same, at ×1.

Or see every form ranked by absorption evidence.

Products using Vitamin K1

Scored products that list it on the label, highest scoring first. Ordering is by SuppScore only. We have no commercial relationship with any brand shown.

Thorne

Basic Nutrients 2/Day NSF-CERTIFIED FOR SPORT^®

SuppScore 66

Pure Encapsulations

O.N.E Multivitamin with Iron

SuppScore 59

Biocare

Methyl Pregnancy Multinutrient

SuppScore 58

Pure Encapsulations

Women’s Nutrients

SuppScore 57

ARTAH

Advanced Multi-Nutrient

SuppScore 57

Thorne

Multi-Vitamin Elite A.M. & P.M.

SuppScore 56

Transparent Labs

Multivitamin

SuppScore 55

Thorne

Advanced Nutrients

SuppScore 54

Pure Encapsulations

O.N.E. Multivitamin

SuppScore 53

References

Reviewed by the SuppScore advisory board

Every score on this page is computed from the SuppScore ingredient database using our published scoring rules. Our advisory board maintains those rules and the ingredient data behind them, and takes no payment from the brands whose products are scored.

Meet the advisory board · Last reviewed 1 Sept 2026

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How Vitamin K1 compares

Products using Vitamin K1

References

Other Vitamin K forms