Vitamin D-1,000
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne Vitamin D-1,000
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Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Vitamin DVitamin D3 | 3000 IU |
Certifications & Testing
Other Ingredients
Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide, Vitamin E (d-Alpha Tocopheryl)
Recommended Use
Take 1 capsule 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-1,000's Formulate score?
Thorne Vitamin D-1,000 scores 95 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-1,000 worth it?
Thorne Vitamin D-1,000 scores 95/100 (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-1,000?
Each serving contains Vitamin D (3000 IU). Serving size: 1 Capsule. 180 servings per container.
How do I take vitamin d-1,000?
Take 1 capsule one to three times daily or as recommended by your health-care practitioner.
Who makes Vitamin D-1,000?
Vitamin D-1,000 is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne Vitamin D-1,000 third-party tested?
Thorne lists the following certifications and testing for this product: Gluten Free, Soy Free, Dairy Free, Natural Flavors, Natural Colors, Made in USA, Third-Party Contents Certified, Thorne Verified, 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.