Vitamin K2 liquid helps support bone health and cardiovascular wellness by delivering MK-4 vitamin K2 in a fast acting and easy to dose liquid form. The star ingredient MK-4 vitamin K2 supports bone strength and vascular health. This quality is backed by Thorne Research, which has long stood for professional-grade purity and potency with rigorous controls and allergen screening. Quality you can trust.

Available Sizes & Variants:

1 oz Vitamin K2 liquid - compact bottle for travel.

Benefits & Features:

• Supports bone health with the k2 vitamin MK-4.
• Vitamin K2 in MK-4 form activates proteins that move calcium into bone, helping support bone strength and cardiovascular health by maintaining calcium balance.
• Dropper delivery makes dosing simple and flexible for busy days ahead.
• Thorne's professional-grade quality control means high purity and potency you can trust.
• Manufactured under Thorne's professional-grade standards with rigorous QA, allergen screening, and third-party testing to ensure purity and potency in every bottle.

Thorne's approach blends science with care. This Vitamin K2 liquid uses MK-4 to activate osteocalcin and matrix Gla-protein, moving calcium into bone for stronger bones and healthier arteries. The formula is gluten-free, dairy-free, and soy-free, and bottled with strict QA and third-party testing. Each drop delivers 1 mg of vitamin K2, with a typical serving of 15 drops supporting easy dosing across the day. A reliable addition to your bone health supplement routine backed by Thorne's heritage of quality.

Vitamin K

• GTIN: 693749170013
• Manufacturer: Thorne
• Categories: New ArrivalsPopular Supplement BrandsThorne SupplementsVitamin K Supplements & Tablets
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 15 drops one to three times a day, or as advised by your healthcare professional. Turn the bottle upside down to release each drop. You can add it to food or mix it into drinks. Do not refrigerate. Take 1 tablet 1 to 3 times daily with food. Do not exceed three tablets per day.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Vitamin K2 (MK-4)

Vitamin K2 in the MK-4 form is a fat-soluble vitamin that supports normal physiological functions relating to bone and vascular health. This liquid preparation provides MK-4 as the primary active ingredient, enabling rapid delivery from a simple oil-based carrier.

Source and form information indicate MK-4 as the key active component, with the formulation designed for easy dosing in a bioavailable liquid format.

What Does Vitamin K2 (MK-4) Do?

Vitamin K2 assists with the activation of proteins that help move calcium from soft tissues into bone, a mechanism discussed in nutrition research and recognised by EFSA‑aligned guidance. Dr. Cockayne of the University of Reading found that this form contributes to bone and vascular health by supporting calcium management in the body.

In addition, Vitamin K2 supports normal bone function and cardiovascular wellness by enabling proper calcium utilisation, aligning with general functional knowledge and health guidance.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Welzo's medical team picked Thorne for Vitamin K2 based on solid brand heritage and a proven dedication to professional-grade quality. Thorne Research is known for its thorough quality assurance and commitment to purity and potency, making them a trusted partner in evidence-based nutrition. This brand carries a long-standing reputation for using high-grade ingredients and disciplined sourcing, which lines up with our emphasis on safety and reliability.

Our assessment highlights Thorne's manufacturing excellence and adherence to industry standards, including cGMP practices and regular quality controls. The brand is known for independent testing, allergen screening, and strict labelling practices, all of which support safe, consistent products. This makes Thorne a standout pick among rivals in the vitamins space and underpins our confidence in their ability to deliver a dependable Vitamin K2 offering.

We carry Thorne Vitamin K2 because it meets our standards for quality, transparency, and brand integrity. This product mirrors Thorne's dedication to supplying targeted, well-documented formulations, which we verify through Welzo's team and quality standards pages. For our customers, this means a reliable option backed by expert curation from Welzo's healthcare professionals and our commitment to our ingredient quality and purity standards.