Vitamin K1 (Phylloquinone)｜HerbBB ingredient encyclopedia

Why supplement?

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Supports normal blood clotting

Vitamin K1 (phylloquinone) is a cofactor the liver needs to make several clotting proteins. Leafy greens are the main dietary source. The main use is clotting nutrition. People on anticoagulants must keep intake steady and have a doctor monitor; general pages only state the clotting-protein activation role.

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Involved in bone metabolism

Vitamin K also takes part in activating bone-related proteins; K1 is the most common form in the diet. Uses can cover both clotting and bone-metabolism nutrition. Read the label in micrograms, and distinguish K1 from K2; do not apply different menaquinone studies directly to K1.

How to take it

With foodBest taken with food (not on an empty stomach)

Best timeMorning or midday

For people on warfarin, the priority is a stable daily intake—not cutting out vitamin K entirely.

General wellness120 mcg/day for adult men; 90 mcg/day for adult women (AI)

Specific needsNo official UL; typical adult supplement daily safety upper limit is about 1,000 mcg. people on anticoagulants must not self-adjust, must be decided by a clinician.

How oftenUse the adequate daily intake; anyone on anticoagulants must ask a doctor first.

What to watch

Cautions

People on warfarin should not change vitamin K intake on their own; keep it stable and follow medical monitoring.

People with cholestasis or fat malabsorption should ask a doctor first.

Common side effects

· Usual food and supplement amounts are generally well tolerated

Rare but important

· Unstable anticoagulation control may increase thrombosis risk.

Long-term dependenceDoes not cause addiction or typical tolerance.