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

Initial Posting: 2/9/13  Updated 6/20/14 
Calcium Supplements Reviewed by Some Calcium Supplements Fail to Break Apart Properly!

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

Alphabetical list of calcium supplements reviewed and rated in report
Caltrate 600+D Plus Minerals Jarrow Formulas Bone-Up Rexall Calcium
Citracal Calcium + D Slow Release 1200 Kirkland Signature (Costco) Calcium Schiff Bone Care Super Calcium
Citracal Cacium Citrate + D3 Petites Life Extension Bone Restore Simply Right (Sam's Club) Calcium
Citracal Calcium Gummies with Vitamin D3 L'il Critters Calcium Gummy Bears with D3 Solgar Calcium Citrate with Vitamin D3
CVS Pharmacy Calcium Vitamin D3 Melaleuca Vitality Calcium Complete Spring Valley [Walmart] Calcium plus Vitamin D3
Douglas Laboratories Calcium Citrate Nature Made Calcium Swanson Calcium Citrate & Vitamin D
Dr. Whitaker Osteo Essentials Nature's Bounty Calcium Plus 1000 IU D3 Trader Joe's Calcium Citrate with Vitamin D
Finest Nutrition (Walgreens) Calcium New Chapter Bone Strength Take Care Viactiv Calcium Plus D
Flintstones Plus Bone Building Support NOW Calcium Citrate Vitacost Calcium Magnesium & Vitamin D
Freeda Calcium Carbonate Pure Essence Ionic-Fizz Super D-K Calcium Plus Vitamin Shoppe Calcium Citrate, Magnesium & D
GNC Calcimate Plus 800 Puritan's Pride Calcium Vitamin World Calcium with Vitamin D3
GNC Calcium Plus 1000 with Magnesium & 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. At the same time, certain people may be increasing their risk of heart attack and kidney stones by taking too much calcium from supplements. And some people may be using products that are not properly made.
Out of 15 calcium supplements recently purchased by, 4 failed quality testing: Two popular products failed to properly break apart in disintegration testing -- meaning that you may not be getting the full benefits; another product was contaminated with lead above the level permitted without a warning label in California; and a widely-sold, candy-like combination supplement contained much more vitamin D than listed on the label -- 82% more!
You must join to get the test results and quality ratings for calcium supplements, including combination products with vitamin D, vitamin K, and magnesium. You will get results for 33 calcium supplements: 15 selected for testing by and 18 others that passed CL's Voluntary Certification Program testing. We also identify two products that are the same as one that passed testing but are sold under different brand names. 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 better for you
    • The latest 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)
How much calcium from supplements is too much? Get the answer >>

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

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 >>

Which supplements are important after bariatric surgery (i.e., weight loss or stomach-reducing surgery)? Are there any I should avoid? 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 enterically coated supplements better than non-enterically coated ones? Get the answer >>
The distributor of a product which failed quality testing in this review has published information which could mislead a consumers. See the Update in the report for details.

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