Calcium is critical for building and maintaining strong bones. Used regularly with vitamin D, calcium supplements may protect against osteoporosis in postmenopausal women. And these benefits from caclium may be enhanced by vitamin K.
But ConsumerLab.com's review found that not all calcium supplements provide their listed ingredients. Our research found one calcium supplement to contain just 87% of the calcium claimed on its label. Another calcium supplement provided just 89.2% of the expected calcium and only 67.2% of the claimed vitamin K. A third calcium supplement contained only 52.5% of its vitamin K -- despite the brand claiming to be lab tested and guaranteed for labeled potency.
You must subscribe to get the full test results and ConsumerLab recommendations and ratings for calicium supplements. In this comprehensive calcium report, you'll discover:
- Which calcium brands failed testing and which passed
- The pros and cons of different forms of calcium supplements such as carbonate, citrate, oyster shell, and coral calcium
- Calcium dosage for specific uses
- Concerns and cautions when using calcium
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See additional reports on Vitamin D Supplements and Vitamin K Supplements.
