Vitamin D + K2 Liquid
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Vitamin D + K2 Liquid
A convenient combination of vitamin D and vitamin K for bone, cardiovascular, and immune support* Vitamin D + K2 Liquid promotes bone health, healthy immune function, and cardiovascular health.* The combination of vitamin D3 and K2 provides greater benefits together than either does individually.
Score Breakdown
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Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Vitamin DVitamin D3 | 3000 IU |
| Vitamin K (as Vitamin K2 (Menatetrenone)) | 600 mcg |
Certifications & Testing
Other Ingredients
MK4, Medium Chain Triglyceride Oil, Mixed Tocopherols
Recommended 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.
Warnings
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.
Frequently Asked Questions
What is Thorne Vitamin D + K2 Liquid's Formulate score?
Thorne Vitamin D + K2 Liquid scores 98 out of 100 (grade A) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne Vitamin D + K2 Liquid worth it?
Thorne Vitamin D + K2 Liquid scores 98/100 (grade A). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne Vitamin D + K2 Liquid?
Each serving contains Vitamin D (3000 IU), Vitamin K (as Vitamin K2 (Menatetrenone)) (600 mcg). Serving size: 2 Drops. 600 servings per container.
How do I take vitamin d + k2 liquid?
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.
Who makes Vitamin D + K2 Liquid?
Vitamin D + K2 Liquid is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Vitamin D + K2 Liquid third-party tested?
Thorne lists the following certifications and testing for this product: Gluten Free, Soy Free, Dairy Free, Natural Flavors, Natural Colors, Thorne Verified, GMP Certified, Manufactured in the USA.
Related Supplements
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.