What is the recommended dosage for Vitamin K?

General: 90-120 mcg/day (AI); Skin Health: 90-120 mcg/day (limited evidence for higher doses)

What are the side effects of Vitamin K?

Potential side effects include: Generally well-tolerated, Rare allergic reactions.

What is vitamin K and how may it relate to skin health?

Vitamin K plays roles in blood clotting and may support skin healing and reduce dark circles under the eyes by strengthening capillary walls. Topical vitamin K is used in some dermatological products for bruising and post-procedure recovery. Oral vitamin K supplementation for skin benefits has limited clinical evidence.

What dosage of vitamin K has been studied for skin conditions?

Most skin-related vitamin K research involves topical application rather than oral supplementation. Topical studies have used 1–5% vitamin K1 (phylloquinone) creams for bruising and dark circles. The RDA for oral vitamin K is 90–120 mcg. Vitamin K2 supplementation at 90–180 mcg daily is studied primarily for bone and cardiovascular health.

What are the potential side effects of vitamin K supplements?

Vitamin K1 and K2 are generally safe at supplemental doses. The critical interaction is with warfarin and other vitamin K antagonist anticoagulants, where vitamin K can reduce anticoagulant efficacy. Individuals on warfarin must maintain consistent vitamin K intake. No tolerable upper intake level has been established for vitamin K.

Vitamin K
Vitamin K

other

Auch bekannt als: Phylloquinone (K1), Menaquinone (K2), Phytonadione, MK-4, MK-7

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About

Vitamin K is a fat-soluble vitamin essential for blood coagulation that may support skin healing and reduce bruising. Topical vitamin K has been studied for dark circles under the eyes. Oral supplementation for skin has minimal clinical evidence, though K2 is being investigated for elastic fiber calcification prevention.

How It Works

Fat-soluble vitamin essential for blood coagulation (carboxylation of clotting factors); may support skin healing and reduce bruising; vitamin K-dependent proteins (Gas6) are involved in skin cell proliferation; topical vitamin K may reduce dark circles by strengthening capillary walls.

Evidence For Conditions

Beschwerde	Bewertung	Studien	Teilnehmer
Dark Circles Under Eyes	D	2	80	Ansehen →

Side Effects

Generally well-tolerated
Rare allergic reactions

Drug & Supplement Interactions

Warfarin and other anticoagulants (vitamin K directly antagonizes warfarin — maintain consistent intake)
Bile acid sequestrants (may reduce vitamin K absorption)
Orlistat (may reduce absorption of fat-soluble vitamins)

Informieren Sie immer Ihren Arzt über alle Nahrungsergänzungsmittel, die Sie einnehmen.Informieren Sie immer Ihren Arzt über alle Nahrungsergänzungsmittel, die Sie einnehmen.

Related Ingredients

Pantothenic Acid N-Acetyl Cysteine

Kurzinformationen

Dosierung: General: 90-120 mcg/day (AI); Skin_Health: 90-120 mcg/day (limited evidence for higher doses)
Darreichungsformen: capsule softgel tablet topical cream
Natürliche Quellen: Dark leafy greens (kale, spinach), Natto, Fermented foods, Broccoli, Brussels sprouts
Obergrenze: No established UL for K1; K2 generally safe at studied doses
Beste Einnahmezeit: With meals containing fat

Evidenzzusammenfassung

Dark Circles Under Eyes D

FDA-Haftungsausschluss: Diese Aussagen wurden nicht von der Food and Drug Administration bewertet. Die Produkte und Informationen auf dieser Website sind nicht dazu bestimmt, Krankheiten zu diagnostizieren, zu behandeln, zu heilen oder zu verhindern. Die dargestellten Evidenzbewertungen basieren auf unserer Analyse veröffentlichter begutachteter Forschung und stellen keine medizinische Beratung dar. Konsultieren Sie immer Ihren Arzt, bevor Sie mit der Einnahme von Nahrungsergänzungsmitteln beginnen.