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Vitamin K-500

product on market Capsule ProCaps Laboratories Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 33% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · methodology

Vitamin K1 and calcium are supported by strong evidence for maintaining bone density and blood coagulation. Vitamin C provides antioxidant support and aids in collagen synthesis. However, the overall evidence coverage for this specific ingredient combination is limited.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for Vitamin K-500
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
360
Servings
Other Combinations
Product Type
33%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Vitamin C
5 mg (8% DV)
500 mcg (625% DV)
4.2× RDA — above typical dose 275 studies (A:9, B:175)
Calcium
150 mg (15% DV)

Other Ingredients

Gelatin Capsule
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested use consume one capsule daily or as recommended by a health care professional. For best results, take this product with food containing a small amount of fat.

Warnings & Precautions

Warning unless directed by a physician, Vitamin K is not for use with any anticoagulant drugs (Coumadin, Warfarin, Heparin, etc.).

If you have ever experienced any blood clotting abnormalities, consult with a health professional before using this or any Vitamin K-containing product.

Of course, our Vitamin K is not intended for use by those being treated for blood clotting issues without physician approval.

Formulation Notes

Optimum Skeletal Support and Calcium Utilization

Andrew Lessman’s Vitamin K-500 provides a convenient high potency source of Vitamin K-1 (Phytonadione).

Contains no additives or common allergens of any kind.

Additional Information

This product is available from HSN 800.944.9999 ProCaps Laboratories 800.800.1200 ProCapsLabs.com

All-Solar Manufacturing

603455-02U

Vitamin K is well-known for its essential role in blood clotting and its name is derived from the German word Koagulation (English coagulation or clotting).

Beyond its role in blood clotting, Vitamin K plays many other vital functions in the body, most noteworthy is its crucial role in the utilization and retention of Calcium in bone. Numerous clinical studies have shown that healthy levels of Vitamin K support improved bone and skeletal health. Unfortunately, like many key nutrients, Vitamin K is found in foods that most Americans avoid, such as green leafy vegetables. Making matters worse is the fact that Vitamin K is not well stored in the body and requires consistent replenishment. When combined with a diet or supplement regime rich in the other bone health nutrients: Calcium and Vitamin D, our Vitamin K-500 provides an economical and effective means of achieving the levels of Vitamin K necessary to support optimum bone and skeletal health.

Metadata

Product Details

DSLD Entry Date2017-01-25
Product TypeOther Combinations
FormCapsule
DSLD ID69493
Data Updated2026-04-11
Research

Research Evidence

332
Research Sources
59
Avg Quality
220
Meta Analysis
56
Systematic Review
30
Rct
16
Clinical Trial
3
Guideline
3
Regulatory Source
1
Narrative Review
1
Other
1
Openfda Safety
A Duration of treatment with vitamin K antagonists in symptomatic venous thromboembolism
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
A Antiplatelet and anticoagulant agents for secondary prevention of stroke and other thromboembolic events in people with antiphospholipid syndrome
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
A Anticoagulants (extended duration) for prevention of venous thromboembolism following total hip or knee replacement or hip fracture repair
Meta Analysis The Cochrane database of systematic reviews 2016 PubMed DOI
A Antiplatelet and anticoagulant agents for secondary prevention of stroke and other thromboembolic events in people with antiphospholipid syndrome
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Direct factor Xa inhibitors versus low molecular weight heparins or vitamin K antagonists for prevention of venous thromboembolism in elective primary hip or knee replacement or hip fracture repair
Meta Analysis The Cochrane database of systematic reviews 2025 PubMed DOI
A Factor Xa inhibitors versus vitamin K antagonists for preventing cerebral or systemic embolism in patients with atrial fibrillation
Meta Analysis The Cochrane database of systematic reviews 2018 PubMed DOI
A Antiplatelet agents and anticoagulants for hypertension
Systematic Review The Cochrane database of systematic reviews 2022 PubMed DOI
A Primary prophylaxis for venous thromboembolism in ambulatory cancer patients receiving chemotherapy
Meta Analysis The Cochrane database of systematic reviews 2012 PubMed DOI
A Factor Xa inhibitors versus vitamin K antagonists for preventing cerebral or systemic embolism in patients with atrial fibrillation
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Anticoagulation for the long-term treatment of venous thromboembolism in patients with cancer
Meta Analysis The Cochrane database of systematic reviews 2014 PubMed DOI
View all evidence for Vitamin K →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.