Vitamin D Liquid
Scored by the Formulate Research Team · Last reviewed July 2026
Overview: Thorne Vitamin D Liquid
Good health starts with vitamin D, which supports healthy bones and muscles, cardiovascular health, and immune function* Vitamin D3 in liquid form to provide easy, accurate, and personalized supplementation of vitamin D, an important nutrient for all stages of life.
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Other Ingredients
Medium Chain Triglycerides, Mixed Tocopherols
Recommended Use
Take 2 drops one to three times daily or as recommended by your health-care practitioner.
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 There are no known adverse interactions or contraindications at publication date.
Frequently Asked Questions
What is Thorne Vitamin D Liquid's Formulate score?
Thorne Vitamin D Liquid scores 94 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Thorne Vitamin D Liquid worth it?
Thorne Vitamin D Liquid scores 94/100 (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 Liquid?
Each serving contains Vitamin D3 (75 mcg). Serving size: 2 Drops. 600 servings per container.
How do I take vitamin d liquid?
Take 2 drops one to three times daily or as recommended by your health-care practitioner.
Who makes Vitamin D Liquid?
Vitamin D Liquid is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Vitamin D Liquid third-party tested?
Thorne lists the following certifications and testing for this product: NSF Certified, Gluten Free, Dairy Free, Soy Free, Thorne Verified, Natural Flavors, Natural Colors, GMP Certified.
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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.