Join FREE Newsletter

My Account Logout Contact Us Subscribe Now! Login Contact Us
Home Product Tests  Warnings  Encyclopedia News Where to Buy

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

Intial Posting: 4/4/15 Last Update: 10/17/15
Calcium Supplements Reviewed by Caution with Calcium Supplements Containing Added Bone Health Ingredients! 

Be Sure You Are Taking a Quality Product. Find Out Now If Yours Passed!

Alphabetical list of calcium supplements reviewed and rated in report
Bayer Citracal Slow Release 1200 Douglas Laboratories Calcium Citrate Rainbow Light Food Based Calcium
Andorra Life Collagen Calcium Finest Nutrition (Walgreens) Calcium Shaklee Osteomatrix
Bayer Citracal Petites GNC Calcium Plus 1000 with Magnesium & D3 Solgar Calcium Citrate with Vitamin D3
Bayer Flintstones Healthy Bone Support Calcium & Vitamin D3 Jarrow Formulas Bone-Up Spring Valley [Walmart] Calcium plus Vitamin D3
Caltrate 600+D Plus Minerals Kirkland Signature [Costco] Calcium Citrate Magnesium And Zinc Standard Process Calsol
ChildLife Liquid Calcium With Magnesium Nature Made Calcium Magnesium Zinc Trader Joe's Calcium Citrate with Vitamin D
Country Life Bone Solid Nature's Way Alive Calcium Bone Formula USANA Active Calcium
CVS/pharmacy Calcium Nature's Way Alive Calcium Gummies Viactiv Calcium Plus D - Milk Chocolate
DG Health [Dollar General] Calcium Nutrilite Cal Mag D Advanced Yummi Bears Vegetarian Sour Calcium + Vitamin D3
Make sure the calcium supplement you take passed our review and is right for you! Isn't your health worth it?

Calcium is critical for building and maintaining strong bones and preventing osteoporosis. Calcium is also needed for the proper functioning of nerves, muscles, glands, and the cardiovascular system.

Some people don't get enough calcium and can benefit from calcium supplements. But you need to be careful! If you take too much calcium from supplements, you may be increasing your risk of heart attack and kidney stones. 

You also need to be concerned about the quality of calcium supplements. Out of 15 calcium supplements recently purchased by, 3 failed quality testing because they contained incorrect amounts of other key ingredients -- one contained 183% of its listed amount of vitamin D, another contained 89% of its listed vitamin D, while a third contained none of its listed vitamin K2

You must become a member to get the test results and quality ratings for the calcium supplements we tested, including combination products with vitamin D, vitamin K, and magnesium. You will get results for 27 calcium supplements: 15 selected for testing by and 12 others that passed the same tests through CL's voluntary Quality Certification Program. In this comprehensive report, you'll discover:

    • Which calcium supplements failed our quality ratings and which passed -- including combinations with vitamin D, vitamin K, and magnesium 
    • Cost comparisons to help you choose a calcium supplement offering the best value based on amounts of elemental calcium
    • The pros and cons of different forms of calcium such as carbonate, citrate, oyster shell, and coral calcium and which may be best for you
    • Recommendations on calcium dosage by age and gender and for specific uses, as well as how much calcium may be too much and how best to take calcium supplements
    • Potential drug interactions and side effects of calcium supplements

If you already are a member, SIGN IN now. Answers -- for Calcium Supplements (Including Vitamin D, Vitamin K, and Magnesium)
I would like to know about different sources of vitamin K2. I have been told it is from natto or fermented soy and from a flower called geraniol. Can you tell me the difference? Is one source better than another? 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 >>

Are supplements which claim increased absorption or improved bioavailability telling the truth? Is it worth paying more for these? Are there concerns? 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 >>

Are enterically coated supplements better than non-enterically coated ones? Get the answer >>

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

I take levothyroxine (Synthroid), a thyroid hormone to treat hypothyroidism. Are there supplements I should avoid, or be taking, due to this drug? Get the answer >>

How much calcium from supplements is too much? Get the answer >>

I was surprised when my doctor told me to stop taking supplements because my kidney function was low. But after stopping the supplements, my kidney function returned to normal. Can taking a lot of supplements really damage the kidneys? Get the answer >>

I have low blood pressure. Are there any supplements I should avoid? 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 >>

Does Prevagen really improve memory? Get the answer >>

Can taking fish oil or calcium supplements increase my risk of prostate cancer? My doctor recommended that I stop taking them since I have an enlarged prostate. Get the answer >>

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

Is calcium hydroxyapatite really better than other forms of calcium? Get the answer >>

Is there a danger of getting too much calcium from Tums? I take them frequently for heartburn. Get the answer >>

Do any supplements help for tinnitus? Is it true that some supplements can cause tinnitus? Get the answer >>

Is it important to take calcium and magnesium together? Get the answer >>

Is it safer to get calcium from foods than from supplements? How about from calcium-fortified orange juice and non-dairy milks? Get the answer >>

Are plant-based calcium supplements, like AlgaeCal, better than regular calcium supplements? Get the answer >>

Which supplements can help with indigestion and/or heartburn? Get the answer >>

After developing kidney stones, I was told to avoid tea -- but recently I've heard that green tea might actually be helpful for kidney stones. Is that true? Get the answer >>

I read an article stating that some of the ingredients in Centrum multivitamins may be dangerous or toxic. Is that true? Get the answer >>

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

Are there any supplements I should avoid when taking an antibiotic? Are there any that may be helpful? Get the answer >>

Follow on Twitter    |     Become a Fan on Facebook
Join | Sign In
Home | Product Tests | Brands Tested | Health Conditions | Encyclopedia | CL Answers | Clinical Updates | Where to Buy Products
News | Recalls & Warnings | RDAs | Raw Materials Tests | Testing Programs | The CL Seal | CL Survey | About Us
In The News | Group Subscription | Gift Memberships | Join Free Newsletter | Privacy Policy | Site Map | Testimonials | Contact Us/Help

©2016, LLC. All rights reserved. A single copy of a report may be printed for personal use by the subscriber.
It is otherwise unlawful to print, download, store or distribute content from this site without permission. name and flask logo are both registered trademarks of, LLC.
This site is intended for informational purposes only and not to provide medical advice.