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Product Review: Vitamin D Supplements Review (Including Calcium, Vitamin K, Magnesium)

Posted: 5/14/15/17  
Vitamin D Supplements Reviewed By 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 

Vitamin D supplements reviewed and rated (alphabetical)
365 (Whole Foods) Vitamin D3 Kirkland Signature (Costco) Calcium Solgar Vitamin D3 (Cholecalciferol)
AdvoCare Calcium Plus Kirkland Signature (Costco) Vitamin D3 Source Naturals Vitamin D-3
AlgaeCal Plus Kirkland Signature [Costco] Calcium Citrate Magnesium And Zinc Spring Valley [Walmart] D3
Baby Ddrops Vitamin D3 Life Extension Vitamin D3 Sundown Naturals Calcium Plus Vitamin D3
Bayer Citracal Petites L'il Critters Calcium Gummy Bears with D3 The Honest Co. Gummy Calcium & Vitamin D3
Bio Tech D3-50 Member's Mark (Sam's Club] Vitamin D-3 Thorne Research Vitamin D
Bluebonnet EarthSweet Chewables Calcium Magnesium & D3 Metagenics CalApatite Bone Builder With Magnesium Trader Joe's Calcium Citrate with Vitamin D
Caltrate 600 + D3 Nature Made D3 USANA Vitamin D
ChildLife Liquid Calcium With Magnesium Nature's Bounty Calcium Magnesium Zinc Viactiv Calcium Plus D - Milk Chocolate
CVS Pharmacy Vitamin D3 Nature's Bounty D3 Vitacost Vitamin D3
Doctor's Best Artery Prime With MenaQ7 Nature's Way Alive Calcium Bone Formula Vitafusion Vitamin D3
Finest Nutrition (Walgreen) Vitamin D3 NatureWise Vitamin D3 Vitamin World Calcium with Vitamin D3
Garden of Life Vitamin Code RAW D3 NOW Vitamin D-3 & K-2 Vitamin World Vitamin D3
GNC D-3 Pure Encapsulations OsteoBalance Wellesse Calcium & Vitamin D3
Jamieson D Puritan's Pride Sunvite Super-Potency Vitamin D3 WHC UnoCardio
Jarrow Formulas Bone-Up RiteAid Pharmacy Vitamin D-3  
Make sure the vitamin D supplement you take passed our test and is right for you!
Isn't your health worth it?

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

If you already are a member, SIGN IN now. Answers -- for Vitamin D Supplements Review (Including Calcium, Vitamin K, Magnesium)
Is it possible to get too much vitamin D? Get the answer >>

I recently read about a study showing an INCREASE in prostate cancer in men supplementing with vitamin D. Is this true? Get the answer >>

How likely are Americans to be deficient in vitamins or minerals? Get the answer >>

Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins? Get the answer >>

I've been buying nutritional supplements in powder form, as I find them cheaper than tablets and capsules. I am concerned about the effect of air when I open the bottles daily because sometimes my powdered supplements get clumpy. Should I be concerned? Get the answer >>

What Is Marine-D3 and does it live up to anti-aging claims? Get the answer >>

Which supplements are important after bariatric surgery (i.e., weight loss or stomach-reducing surgery)? Are there any I should avoid? Get the answer >>

Which supplements can help keep my heart healthy? Are there any to avoid? Get the answer >>

As vitamin D is a fat-soluble vitamin, why is it necessary to take it every day? Get the answer >>

I'm thinking of changing my multivitamin, but the one I'm considering doesn't contain molybdenum. Most others have it. How important is molybdenum? Get the answer >>

I have been having dizziness for the past few months and am wondering if it could be a side effect of supplements I take. Which supplements cause dizziness? Get the answer >>

I'm taking Lumiday, a supplement to improve mood. It seems to help me but is it safe? Get the answer >>

Is it better to eat farmed salmon or wild salmon? Which one has more omega-3s and less contamination with PCBs, mercury, etc.? Get the answer >>

Is there cause for concern with "gummy vitamins?" There are many different gummies out there. Are some better than others? Get the answer >>

Which supplements help reduce the risk of colorectal cancer? Get the answer >>

A blood test showed my vitamin D level is low. How do I know how much vitamin D to take? Get the answer >>

I read that aging lowers the body's capacity to produce vitamin D. Even regular sun exposure will not suffice and one may have to take a vitamin D3 supplement during old age to meet our body's regular requirements. Please comment on this. Get the answer >>

I spend a lot of time in the sun, especially in the summer. Does this mean my vitamin D levels could get too high? Get the answer >>

Is there a difference between taking vitamin D in the dry form versus the oil capsules? Is one better than the other? Get the answer >>

Which supplements can help to lower blood pressure? Get the answer >>

Do any supplements improve balance or reduce the risk of falls? Get the answer >>

Which supplements reduce the risk of stroke? Which increase the risk of stroke? Get the answer >>

Which supplements can help lower or control my blood sugar? Get the answer >>

If vitamin K absorption appears to be reduced by other fat-soluble vitamins, like vitamin D, why do some "bone health" supplements combine them? Should they be taken separately? Get the answer >>

Are the "% DV" numbers on vitamin supplement labels really based on what I need? Get the answer >>

Which supplements can help treat constipation? Get the answer >>

I've heard it's best to take fat-soluble supplements, like CoQ10, curcumin, and vitamin D, with fats or oils to increase absorption. Would taking them with a fish oil capsule be enough? Get the answer >>

I do moderate exercise for about an hour a few times a week. Which supplements might help me? Get the answer >>

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