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

다른 이름: Phylloquinone (K1), Menaquinone (K2), Phytonadione, MK-4, MK-7

𝕏 LinkedIn

<\/script>\n

`; }, get iframeSnippet() { const domain = 'skincited.com'; const params = 'ingredient\u003Dvitamin\u002Dk'; return ``; }, get activeSnippet() { return this.method === 'script' ? this.scriptSnippet : this.iframeSnippet; }, copySnippet() { navigator.clipboard.writeText(this.activeSnippet).then(() => { this.copied = true; setTimeout(() => { this.copied = false; }, 2000); }); } }" @keydown.escape.window="open = false" @click.outside="open = false">

Embed This Widget

Style

Widget powered by . Free, no account required.

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

건강 상태	등급	연구	참여자
Dark Circles Under Eyes	D	2	80	보기 →

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)

복용 중인 모든 건강기능식품에 대해 반드시 의료 전문가에게 알리십시오.

Related Ingredients

Pantothenic Acid N-Acetyl Cysteine

핵심 정보

용량: General: 90-120 mcg/day (AI); Skin_Health: 90-120 mcg/day (limited evidence for higher doses)
제형: capsule softgel tablet topical cream
천연 원료: Dark leafy greens (kale, spinach), Natto, Fermented foods, Broccoli, Brussels sprouts
상한 섭취량: No established UL for K1; K2 generally safe at studied doses
권장 복용 시간: With meals containing fat

근거 요약

Dark Circles Under Eyes D

FDA 면책 조항: 이 내용은 미국 식품의약국(FDA)의 평가를 받지 않았습니다. 이 웹사이트의 제품 및 정보는 질병의 진단, 치료, 완치 또는 예방을 목적으로 하지 않습니다. 제시된 근거 등급은 발표된 동료 심사 연구에 대한 우리의 분석에 기반하며, 의학적 조언을 구성하지 않습니다. 건강기능식품 복용을 시작하기 전에 반드시 의료 전문가와 상담하십시오.