






From the brand




Foundational Wellness




Sports Nutrition


Is Discontinued By Manufacturer : No
Item model number : D128
Date First Available : October 2, 2001
Manufacturer : Thorne Research
ASIN : B0797H3VQS
Best Sellers Rank: #2,700 in Health & Household (See Top 100 in Health & Household) #37 in Vitamin D Supplements
Customer Reviews: 4.8 4.8 out of 5 stars (3,466) 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) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 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”) || 0) + 1); } }); });
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)

Starr –
Excellent Vitamins D
I’ve been using Thorne Vitamin D for a few months now, and I can truly feel the difference in my energy, mood, and overall health. The quality is top-notch, and I trust Thorne for their clean, science-backed ingredients. It’s easy to take, gentle on the stomach, and I love that it’s tested for purity. Highly recommend this to anyone looking to support their immune system and maintain healthy vitamin D levels—especially if you don’t get much sun!
nancy clayton hoover –
Never want to be without this
I am convinced this is a great product. I think Thorne is a great company and the vitamin D3 supplement has definitely strengthened my bones. I am 84 years old and I tripped over my husband’s wheelchair and landed on my wrist. I am convinced that had I not been taking this high quality supplement I probably would have broken my wrist. I am so grateful that didn’t happen.
Wanda V. –
Good supplement with a good price
For me this is an ideal D3 supplement
Mai Gutierrez –
Easy pull to swallow
Highly recommend for anyone looking for a simple, effective daily vitamin!Energy: Provides a noticeable boost—feel more energized throughout the day.Gentle on the stomach: No upset stomach or digestive issues.Easy to take: Small, easy-to-swallow capsules with virtually no taste.Effective dosage: 1000 IU, exactly what my doctor recommended for daily use.Absorption: Seems well absorbed, I feel the benefits consistently.
Yana –
Vitamina D
Love this brand and the vitamins are great on my third order pretty soon!
DontBeCheeky –
Good brand
For the most part we don’t have issues. Sometimes there is nothing in the capsule which is super annoying. Most of our supplements are Thorne.
Deborah Marszalik –
Great!
I like these capsules because they are small and easy to swallow!
Linda A –
Standerd of Excellence
I use a lot of Thorne products. I am very happy with the brand and they are very good at maintaining the quality of their supplements.
Umar Ilyas –
So far it is effective, I think I will continue with it.