What it is
Vitamin K1 (Phylloquinone) is a fat-soluble vitamin crucial for blood clotting and vascular health. It is available as a single-ingredient supplement for targeted support.
Supplement · Vitamin
Vitamin K1 (Phylloquinone)
100 mcg · vegan · gluten-free · 90 caps
hypertensionperipheral-artery-diseaseatherosclerosis blood vesselheart
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How it works
Vitamin K1 activates proteins essential for blood coagulation and regulates calcium deposition in arteries, preventing vascular calcification. Its effects on cardiovascular markers typically manifest within 4-12 weeks of consistent intake.
Who should take it
Adults looking to address high blood pressure, poor circulation, high cholesterol. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
Avoid / careful
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
When to take it
Morning
Noon
Evening
Night
How to take it
With food
Empty stomach
Before food
FAQs
Frequently asked
How long does it take to see effects from Vitamin K1?
Measurable cardiovascular effects are typically observed within 4 to 12 weeks of consistent daily dosing.
Can Vitamin K1 interact with blood thinners?
Yes, Vitamin K1 can interfere with the action of warfarin. Consult your doctor before taking Vitamin K1 if you are on anticoagulant medication.
What is the best way to take Vitamin K1?
Vitamin K1 is fat-soluble, so it should be taken with a meal that includes some dietary fat to enhance absorption.
Research
6 studies · 2010–2024
Evidence grade
ABCD
B · B · emerging-to-moderate human evidence for cardiovascular and circulatory health
From the blog
Editorial notes
SacredBod's longer take on Vitamin K1 (Phylloquinone) — context the structured blocks above don't capture.
About Vitamin K1 (Phylloquinone)
Vitamin K1 (Phylloquinone) is a vitamin supplement used to support cardiovascular and circulatory health. Plant vitamin K1 for coagulation and vascular health. It is available in softgel form and dosed for adults in India and internationally. As a western-tradition entry in the SacredBod catalog, it is positioned as a single-ingredient option that can be used on its own or layered into a broader protocol. Vitamin K1 (Phylloquinone) works through the mechanisms characteristic of its class — see the mechanism and research sections for detail. It primarily acts on the heart, blood vessels, and effects are dose-dependent, typically becoming measurable within 4-12 weeks for measurable cardiovascular markers. Consistency matters more than dose size for this category.
Evidence
Vitamin K1 (Phylloquinone) carries an evidence grade of B in the SacredBod catalog, reflecting good-but-limited human evidence for cardiovascular and circulatory health. Plant vitamin K1 for coagulation and vascular health. Benefits are cumulative rather than immediate, typically becoming noticeable within 4-12 weeks for measurable cardiovascular markers, and individual response varies.
Dosing
A typical dose is 100 mcg, taken with food, usually in the morning. Start at the lower end, assess tolerance, and stay consistent; more is not automatically better.
Cautions
Pregnant or nursing women without clinician oversight. People on prescription medication affecting the same pathway should consult a doctor before combining. Side effects are uncommon at recommended doses but mild GI upset can occur when starting.
Who it’s for
Adults looking to address high blood pressure, poor circulation, high cholesterol. Particularly relevant for people who prefer a targeted single ingredient and who have ruled out an underlying condition that needs medical care first.
As part of the Vitamin category, Vitamin K1 (Phylloquinone) can be used on its own or layered into a broader protocol — see the Goes with panel for evidence-aligned pairings.
Added to your stack.