Thorne Research

Vitamin D + K2 Liquid

$34.00

SIZE: 30 Milliliters

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The Promise

What this is Liquid Vitamin D3 + K2 (MK‑4) in an MCT oil base

A dropper-delivered blend of vitamin D3 and vitamin K2 (as menatetrenone, MK‑4) in medium-chain triglyceride oil; unflavored and NSF Certified for Sport®.

Identity

Vitamin D + K2 Liquid (Thorne Research); contains vitamin D3 and vitamin K2 as MK‑4 (menatetrenone).

Principal ingredients & form

Vitamin D3 (cholecalciferol) and Vitamin K2 as menatetrenone (MK‑4) in an MCT oil liquid.

Formulation & delivery

Unflavored liquid with dropper; other ingredients: medium‑chain triglyceride oil and mixed tocopherols.

Quality & servings

NSF Certified for Sport®; Serving size: 2 drops; 600 servings per container.

Why It Works

Why this formulation Specific forms and amounts chosen for targeted nutrient delivery

Amounts, molecular forms, and delivery medium are stated on the label to support absorption and nutrient-specific roles.*

01

Vitamin D amount

Each 2‑drop serving provides 1,000 IU (25 mcg) vitamin D3 — 125% Daily Value.

02

Vitamin K2 potency & form

Each 2‑drop serving provides 200 mcg vitamin K as menatetrenone (MK‑4) — 167% Daily Value.

03

Synergistic pairing

D3 with K2 (MK‑4) is formulated to support calcium handling by activating proteins such as osteocalcin and matrix Gla protein.*

04

Lipid delivery medium

MCT oil base provides a fat medium for oil‑soluble vitamins D3 and K2 to aid dispensing and oral absorption.*

Reviews

Customer Reviews

Your Journey

How to use & safety Clear labeled directions, storage, and contraindications

Follow labeled serving, dispensing, storage, and medical-warning guidance exactly.

Serving & timing

Suggested use

Take 2 drops one to three times daily or as recommended by your health‑care practitioner.

Dispensing & mixing

Dispense

Invert bottle to dispense individual drops; may be added to food or mixed in beverages.

Storage

Do not refrigerate

Do not refrigerate.

Warnings & precautions

Allergy, pregnancy, and drug interactions

Contraindicated with hypersensitivity to ingredients. If pregnant, consult your health‑care practitioner. Vitamin K interferes with anticoagulant drugs (like Coumadin); concurrent use should be avoided.

Product education

Vitamin D/K2 Liquid: Synergistic Support for Bone and Cardiovascular Health*

Thorne’s Vitamin D/K2 Liquid is a convenient, well-absorbed liquid supplement that provides a synergistic pairing of two essential nutrients for foundational health. This formula combines vitamin D3, crucial for calcium absorption and immune function, with vitamin K2 as MK-4, which helps direct calcium to the bones and away from sensitive soft tissues like blood vessels. With its easy-to-use dropper, this unflavored liquid is ideal for both children and adults, offering a simple way to support strong bones, a healthy heart, and a robust immune system.*

How It Works: The D3 and K2 Partnership

Vitamins D and K work as a team. While vitamin D ensures the body can absorb calcium, vitamin K is the crucial director that tells the calcium where to go.

Directing Calcium for Strong Bones and a Healthy Heart
Vitamin D3 is essential for promoting calcium absorption in the gut. However, without proper direction, that calcium can potentially be deposited in arteries and other soft tissues. This is where Vitamin K2 (as MK-4) plays its vital role. It activates key proteins, like osteocalcin and matrix Gla protein, that are responsible for binding calcium into the bone matrix. This synergistic action not only supports healthy bone density but also promotes blood vessel elasticity and overall cardiovascular wellness.*

Foundational Support for Immunity and More
Both vitamins are also fundamental for a healthy immune response. Vitamin D is a potent modulator of immune cells, while vitamin K has been shown to support a healthy inflammatory response. This potent combination, delivered in a stable and absorbable liquid form using a base of medium-chain triglyceride (MCT) oil, provides broad-spectrum support for the entire body.*

  • Provides a synergistic blend of vitamins D3 and K2 (as MK-4)
  • Promotes healthy calcium absorption and directs it to the bones*
  • Supports bone density, cardiovascular health, and immune function*
  • A convenient liquid drop format that is ideal for the whole family
  • NSF Certified for Sport®, trusted for purity and safety

Supplement record

Review serving details and ingredients for this product.

Supplement Facts:
Suggested Use: Take 2 drops one to three times daily or as recommended by your health-care practitioner. Invert bottle to dispense individual drops. May be added to food or mixed in beverages. Do not refrigerate.
Serving Size: Two Drops
Servings Per Container: 600
Ingredient Amount %DV
Vitamin D (as Vitamin D3) (1,000 IU) 25 mcg 125%
Vitamin K (as Vitamin K2 (Menatetrenone))† 200 mcg 167%
Other ingredients: Medium Chain Triglyceride Oil, Mixed Tocopherols.
*Daily Value (DV) not established.
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients.
PREGNANCY If pregnant, consult your health-care practitioner before using this product.
INTERACTIONS As Vitamin K interferes with the effect of anticoagulant drugs (like Coumadin), the concurrent use of these agents should be avoided.