KAL Calcium Citrate 1000 gives you 1,000mg of elemental **Calcium** per 3-tablet serving for bone and teeth support — matching the full adult RDA. It uses calcium citrate, a well-absorbed form that doesn't need stomach acid or food to work, so you can take it any time of day.
Your body absorbs calcium best in doses under about 500mg at a time, so taking all three tablets at once leaves some unabsorbed. Splitting them across two meals gets more of that 1,000mg into your bones.
There's no vitamin D3 here to help you absorb the calcium or K2 to steer it toward bone rather than arteries, and supplemental calcium at 1,000mg+ daily carries a small cardiovascular signal in the research. If your diet already includes dairy or leafy greens you may need less than the full dose, and it's worth pairing this with D3 and K2.
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Ingredients (1)
Calcium
100%Dose
1000 mg
Target
200–600 mg
Form
Premium
Other Ingredients (3)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
How to Take It
Take it anytime
Take with food and split doses above 500 mg — absorption drops at higher single doses.
With food
Keep it away from high-oxalate foods like spinach
Space it a couple of hours from Iron, Magnesium and Zinc
On the label
Take 3 tablets daily with a meal or glass of water. Use only as directed.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$18.49
Near the median of 294 calcium supplements
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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.