Vitamin D Supplements Reviewed By ConsumerLab.comProduct Review:
Vitamin D Supplements Review (Including Calcium, Vitamin K, Magnesium)

Find the Best Vitamin D Supplement

How to Choose the Best Vitamin D Supplement? ConsumerLab Reveals Its Top Picks

Tests and Reviews of 40+ Popular Supplements, Including Combinations with Calcium, Vitamin K, and Magnesium 
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Brands compared in report

365 (Whole Foods) Vitamin D3
AdvoCare Calcium Plus
AlgaeCal Plus
Andorra Life Collagen Calcium
Baby Ddrops Vitamin D3
Bayer Citracal Petites
Bio Tech D3-50
Bluebonnet EarthSweet Chewables Calcium Magnesium & D3
Caltrate 600 + D3
ChildLife Liquid Calcium With Magnesium
CVS Pharmacy Vitamin D3
Doctor's Best Artery Prime With MenaQ7
Finest Nutrition (Walgreen) Vitamin D3
Garden of Life Vitamin Code RAW D3
Jamieson D
Jarrow Formulas Bone-Up
Kirkland Signature (Costco) Calcium
Kirkland Signature (Costco) Vitamin D3
Kirkland Signature [Costco] Calcium Citrate Magnesium And Zinc
Life Extension Vitamin D3
L'il Critters Calcium Gummy Bears with D3
Member's Mark (Sam's Club] Vitamin D-3
Metagenics CalApatite Bone Builder With Magnesium
Nature Made D3
Nature's Bounty Calcium Magnesium Zinc
Nature's Bounty D3
Nature's Way Alive Calcium Bone Formula
NatureWise Vitamin D3
NOW Vitamin D-3 & K-2
Pure Encapsulations OsteoBalance
Puritan's Pride Sunvite Super-Potency Vitamin D3
RiteAid Pharmacy Vitamin D-3
Solgar Vitamin D3 (Cholecalciferol)
Source Naturals Vitamin D-3
Spring Valley [Walmart] D3
Sundown Naturals Calcium Plus Vitamin D3
The Honest Co. Gummy Calcium & Vitamin D3
Thorne Research Vitamin D
Trader Joe's Calcium Citrate with Vitamin D
USANA Vitamin D
Viactiv Calcium Plus D - Milk Chocolate
Vitacost Vitamin D3
Vitafusion Vitamin D3
Vitamin World Calcium with Vitamin D3
Vitamin World Vitamin D3
Wellesse Calcium & Vitamin D3
WHC UnoCardio

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More about this report

Choosing the best vitamin D supplement, and knowing when to use it, can be difficult.'s staff removes the guess work by showing you which vitamin D supplements are of highest quality and best value based on independent tests of popular supplements, as well as summarizing the latest clinical studies showing how vitamin D can and cannot help.

Vitamin D plays a critical role in bone health, and adequate vitamin D levels in the blood are associated with reduced risk of heart attack, high blood pressure, depression, rheumatoid arthritis, asthma, allergy, and even colds. Adequate vitamin D has also been shown to strengthen muscles, improve sleep, and reduce the risk of falls, while too much vitamin D can have the opposite effects. You must choose and use vitamin D supplements carefully if you want the best for you and your family.

Our tests found many quality supplements providing 400 IU to 5,000 IU of vitamin D, but also products which may not break apart properly to release their ingredients or contain less ingredient than listed on the label -- including other ingredients for bone health such as calcium, vitamin K, and magnesium.

You must be a member to get the full test results for vitamin D supplements, including quality ratings and CL's Top Picks. You'll also get vitamin D cost and ingredient comparisons to help you find the right product at the best price -- some costing only 1 cent per day. You will get results for 44 vitamin D supplements: 24 selected for testing by and 20 additional products that passed the same tests through CL's voluntary Quality Certification Program, as well as information about three supplements similar to ones that passed testing.  

In this comprehensive report, you'll discover:
    • Which vitamin D supplements failed our quality ratings and which passed -- including combinations with calcium, magnesium and/or vitamin K
    • Cost comparisons to help you choose the best vitamin D supplement for your money
    • What vitamin D can and can't do for you, and how too much can actually harm you
    • What is vitamin D, and is vitamin D2 or D3 best for you?
    • The best way to take vitamin D
    • What is vitamin D deficiency and how to gauge if your vitamin D levels are sufficient, too low, or too high -- and how this may differ if you are black
    • Vitamin D dosage based on your age, gender and needs
    • How to get vitamin D from the sun and from foods 
    • Side effects of vitamin D supplements and potential drug interactions

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Related questions and answers

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