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Vitamins · Ingredient profile
Vitamin K1
Normal clotting & bone proteins
Vitamin K helps make proteins needed for clotting and bone health. K1, or phylloquinone, is the main form in leafy vegetables.
The essentials
Functions & potential benefits
- Supports normal blood clotting.
- Contributes to bone-related proteins.
- Helps maintain vitamin K nutrition.
Everyday nutrition
Where it comes from.
Kale, spinach, broccoli, and other green vegetables.
Read the NIH reference ↗Evidence, in perspective
Know the limits.
Vitamin K has essential functions; extra supplementation is not automatically necessary with adequate intake.
Read the NIH reference ↗Important considerations
Before choosing a supplement.
Vitamin K can seriously affect warfarin therapy. Keep intake consistent and discuss supplements with the prescribing clinician.
Read the NIH reference ↗Ingredient education—not a product claim. This describes the ingredient, not a verified Herbs To Discover formula. Supplement Facts, serving amounts, directions, certifications, and availability are not yet published. Source review date 2026-09-15. Read the NIH reference ↗ · Editorial approach.