THORNE – Vitamin K2 – Concentrated Vitamin K2 (as MK-4) Liquid Supplement – Supports Bone, Heart & and Blood Vessel Health* – Third-Party Certified – Gluten, Dairy & Soy-Free – 1 Fl Oz

Product description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. It may take up to 48 hours for our service

Discover More Products From Thorne

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Add to Cart

Customer Reviews

4.4 out of 5 stars 493

4.3 out of 5 stars 7,260

4.7 out of 5 stars 16,697

4.7 out of 5 stars 2,413

4.6 out of 5 stars 3,088

4.4 out of 5 stars 6,344

4.4 out of 5 stars 2,497

Price

$75.00$75.00

$36.00$36.00

$44.00$44.00

$26.00$26.00

$41.00$41.00

$44.00$44.00

$52.00$52.00

Servings

80

30

90

90

90

30

60

Primary Benefits

Heart & Bone Health

Foundational Support

Sports Performance

Muscle & Sleep Support

Heart & Brain Health

Heart & Gut Health

Muscle & Sleep Support

Key Ingredients

Vitamin K

Vitamin B, Magnesium

Creatine Monohydrate

Magnesium Glycinate

Omega-3 Fatty Acids

Berberine Phytosome

Magnesium

Gluten & Dairy Free

✔

✔

✔

✔

✔

✔

✔

Trusted by 45K+ Health Pros

✔

✔

✔

✔

✔

✔

✔

3rd Party Certified

✔

✔

✔

✔

✔

✔

✔

What makes Thorne supplements high quality?

Thorne produces high-quality supplements through rigorous testing, well-researched ingredient sourcing, and strict manufacturing standards. We avoid unnecessary additives, binders, and fillers that may interfere with nutrient absorption.

How does Thorne test its supplements for quality?

To confirm the purity of our ingredients, the potency of our formulas, and the absence of all contaminants, we carry out a minimum of four rounds of testing on every product we manufacture. 100+ Thorne employees are dedicated to ensuring quality.

Are Thorne supplements clinically tested and safe?

Thorne partners with researchers and conducts clinical trials to support the efficacy of our products. Our team of doctors and medical experts substantiate each ingredient in every formula based on extensive clinical research and medical literature.

Why are Thorne products more expensive than other supplements?

When it comes to the health of our customers, we never settle. Thorne products may be priced higher than some others because of our commitment to quality at every step. We don’t simply meet the standard in dietary supplements — we set the standard.

Where are Thorne supplements made and where are the ingredients sourced from?

Located in South Carolina, Thorne manufactures supplements in the USA using globally sourced ingredients. When it comes to ingredient sourcing, we seek out only the highest-quality ingredients, selecting each one for its purity and effectiveness.

Is Discontinued By Manufacturer ‏ : ‎ No
Item model number ‏ : ‎ Primary supplement type: Vitamin K2
Date First Available ‏ : ‎ April 11, 2005
Manufacturer ‏ : ‎ Thorne Research
ASIN ‏ : ‎ B000FGWDTK
Best Sellers Rank: #59,736 in Health & Household (See Top 100 in Health & Household) #321 in Vitamin D Supplements
Customer Reviews: 4.4 4.4 out of 5 stars (493) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Bone Health: Contributes to bone strength and density by helping to direct calcium to the bones and keeping it from accumulating in soft tissues*
Heart Health: Supports a healthy heart and blood vessels with MK-4, an extensively studied form of vitamin K2*
Liquid Vitamin K2: Self-dispensing top provides an accurate, safe, and individualized serving, by metering individual drops with 1 mg of vitamin K2 (as MK-4) per drop
4 Rounds of Testing: Our state-of-the-art laboratories enable us to conduct 4 rounds of testing on every product, from analyzing the purity of raw materials to confirming the shelf life of finished formulas
Trusted: Thorne is trusted by 100+ professional sports teams and the #1 most recommended clinical brand by consumers and health-care practitioners (Based on a 2026 independent survey of US supplement consumers and health-care practitioners)