Price: $17.00
(as of Jun 11,2026 05:45:30 UTC – Details)
Product description
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Customer Reviews
4.8 out of 5 stars 3,605
4.3 out of 5 stars 7,231
4.7 out of 5 stars 16,617
4.7 out of 5 stars 2,345
4.6 out of 5 stars 3,069
4.4 out of 5 stars 6,316
4.4 out of 5 stars 2,483
Price
$17.00$17.00
$36.00$36.00
$44.00$44.00
$26.00$26.00
$41.00$41.00
$44.00$44.00
$52.00$52.00
Servings
90
30
90
90
90
30
60
Primary Benefits
Immune Support
Foundational Support
Sports Performance
Muscle & Sleep Support
Heart & Brain Health
Heart & Gut Health
Muscle & Sleep Support
Key Ingredients
Vitamin D
Vitamin B, Magnesium
Creatine Monohydrate
Magnesium Glycinate
Omega-3 Fatty Acids
Berberine Phytosome
Magnesium
Gluten & Dairy Free
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Trusted by 45K+ Health Pros
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3rd Party Certified
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What makes Thorne supplements high quality?
Thorne produces high-quality supplements through rigorous testing, well-researched ingredient sourcing, and strict manufacturing standards. We avoid unnecessary additives, binders, and fillers that may interfere with nutrient absorption.
How does Thorne test its supplements for quality?
To confirm the purity of our ingredients, the potency of our formulas, and the absence of all contaminants, we carry out a minimum of four rounds of testing on every product we manufacture. 100+ Thorne employees are dedicated to ensuring quality.
Are Thorne supplements clinically tested and safe?
Thorne partners with researchers and conducts clinical trials to support the efficacy of our products. Our team of doctors and medical experts substantiate each ingredient in every formula based on extensive clinical research and medical literature.
Why are Thorne products more expensive than other supplements?
When it comes to the health of our customers, we never settle. Thorne products may be priced higher than some others because of our commitment to quality at every step. We don’t simply meet the standard in dietary supplements — we set the standard.
Where are Thorne supplements made and where are the ingredients sourced from?
Located in South Carolina, Thorne manufactures supplements in the USA using globally sourced ingredients. When it comes to ingredient sourcing, we seek out only the highest-quality ingredients, selecting each one for its purity and effectiveness.
Is Discontinued By Manufacturer : No
Item model number : D128
Date First Available : October 2, 2001
Manufacturer : Thorne Research
ASIN : B0797H3VQS
Best Sellers Rank: #2,621 in Health & Household (See Top 100 in Health & Household) #18 in Vitamin D Supplements
Customer Reviews: 4.8 4.8 out of 5 stars (3,605) var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) if (dpAcrHasRegisteredArcLinkClickAction !== true) dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, “allowLinkDefault”: true , function (event) if (window.ue) 0) + 1); ); ); P.when(‘A’, ‘cf’).execute(function(A) A.declarative(‘acrStarsLink-click-metrics’, ‘click’, “allowLinkDefault” : true , function(event) if(window.ue) ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) ); );
Vitamin D3 Benefits: Supports healthy teeth and bones by enhancing the absorption of calcium; supports immune function and cardiovascular health*
Optimal Absorption: Vitamin D3 (as cholecalciferol) is more potent and better absorbed than vitamin D2 (or ergocalciferol); research shows vitamin D3 is more effective at raising overall vitamin D levels*
Essential Vitamin D: Optimizes performance, muscle strength and mass, and cellular repair, especially for those who work indoors or lack adequate sun exposure to support the body’s natural vitamin D production*
Third-Party Certified: This product has been third-party tested and certified to verify what’s in the package matches what’s on the label and to confirm it contains no unsafe levels of contaminants
Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners (2023 Health-Care Practitioner Seller Survey)
