Nature's Way **Calcium Citrate** delivers 500mg of calcium per serving for bone and dental support — right in the well-absorbed range, and the most your body takes up in a single dose. Despite the name, it's a blend of citrate, carbonate, and malate: the citrate and malate absorb well without food, while the carbonate needs a meal and stomach acid to break down.
The label has you take two servings daily, putting you at 1,000mg of supplemental calcium — a full day's target, and most people get 700–900mg from food alone. Calcium also needs vitamin D to absorb and K2 to direct it to bone rather than arteries, and this product has neither, so pair it with a D3/K2 supplement. That pairing matters: supplemental calcium at 1,000mg+ daily has been linked to a small rise in cardiovascular events not seen with calcium from food.
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Ingredients (1)
Calcium
100%Dose/day
1000 mg
Target
200–600 mg
Form
Standard
Other Ingredients (4)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.