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Catalog/D-1,000
D-1,000 — image 1 of 6

D-1,000

💊Capsule
🛡️Immune Support🦴Bone Support
🔬Third-Party🏭GMP📊Clinical EvidenceHigh Bioavailability💪Optimal Doses

Get the vitamin that supports healthy teeth, bones, and muscles, as well as cardiovascular and immune function* Vitamin D, in its D3 form, is more potent and better absorbed form than its D2 form. Thorne's vitamin D supplements contain no lactose and no preservatives.

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Overview

Get the vitamin that supports healthy teeth, bones, and muscles, as well as cardiovascular and immune function* Vitamin D, in its D3 form, is more potent and better absorbed form than its D2 form. Thorne's vitamin D supplements contain no lactose and no preservatives.

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.

Active Ingredients

3× DAILYAmounts shown are the daily total. Take 1 capsule one to three times daily or as recommended by your health-care practitioner.
Vitamin D
Vitamin D3
3000IU
3× 1000IU/serving
1250% DV
OPTIMALHIGH BIO

Other Ingredients

Microcrystalline Cellulose, Hypromellose (derived from cellulose) capsule, Leucine, Silicon Dioxide, Vitamin E (d-Alpha Tocopheryl)

Product Info

Serving Size
One Capsule
Servings
90
Price
$17.00
Per Serving
$0.19
Form
capsule

Where to Buy

Links may contain affiliate partnerships. See our disclosure for details.

Certifications

Gluten FreeSoy FreeDairy FreeDerived From Natural FlavorsDerived From Natural ColorsMade in USAThird-Party Contents CertifiedThorne VerifiedGMP

Score Breakdown

Evidence Quality
25%100
All ingredients have Grade A evidence
Evidence grades: A(1)
Dose Adequacy
20%95
Optimal: Vitamin D (as Vitamin D3)
Reference coverage: 100%
Form/Bioavailability
20%100
1 high bioavailability: Vitamin D (Vitamin D3)
Excellent form quality - premium bioavailable forms
Transparency
10%90
Full disclosure - all doses labeled
Contains proprietary blend
Avoid proprietary blends - look for products with fully disclosed formulas
Proprietary blends prevent knowing exact doses - choose transparent alternatives
Safety/Redundancy
10%100
Focused formula (1 ingredient)
Manufacturing Quality
10%82
Third-party testing verified
Certifications: Third-party tested, GMP Certified
NSF Certified products ensure contaminant-free manufacturing
Missing: NSF Certified for Sport, USP Verified
Overall Score94/100

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