Carlson
Calcium Bisglycinate — 250 mg per Serving
60 capsules
Two capsules provide 250 mg calcium from calcium bisglycinate chelate. The selected bottle contains 60 capsules, or 30 servings.
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24 product profiles across 15 brands. Compare the selected format, ingredients and evidence before choosing.
Search and filter this category ↗Compare the mineral amount and the daily diet
Calcium provides structure to bones and teeth and participates in muscle and nerve function. Food intake is the starting point when considering a supplement. A compound such as calcium citrate or carbonate contains only a proportion of calcium, so compare the declared elemental amount and serving size.
Read the evidence limits and sources
Calcium is essential, but adding more than needed does not guarantee stronger bones. Product comparisons should account for food intake, the number of tablets per serving and any vitamin D or magnesium included. Evidence about calcium cannot automatically validate every combination formula.
NIH Office of Dietary Supplements · Calcium ↗
Ingredient context reviewed 2026-10-26. General ingredient evidence does not verify the exact branded products below.
Explore calcium products
Page 1 of 1 · 24 shown
Doctor’s Best
Calcium Bone Maker Complex
180 capsules
Three capsules provide 300 mg calcium, 150 mg magnesium, 40 mcg K2 and other nutrients. The formula includes bovine bone extract and collagen; the bottle has 60 servings.
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Garden of Life
Vitamin Code Raw Calcium
60 vegetarian capsules · 15 four-capsule servings
The four-capsule serving lists 1,100 mg calcium from algae, 357 mg magnesium, 40 mcg vitamin D3 and 50 mcg K2 as MK-7. An additional 120 mcg vitamin K appears separately on the panel.
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HK Vitals
Calcium + Vitamin D3
60 tablets; one-tablet serving
The manufacturer’s selected 60-tablet listing names calcium, vitamin D3, magnesium, zinc and Cissus quadrangularis extract in its ingredient section.
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BoneUp
120 count (2-Pack), 240 count, 360 count — US label
Per 2 capsules: Vitamin C (as Calcium Ascorbate) 66.7 mg Vitamin D (as D3 Cholecalciferol) 8.3 mcg (333 IU) Calcium (Elemental) (from Microcrystalline Hydroxyapatite) 333.3 mg Magnesium (as Magnesium Oxide) 166.7 mg Zinc (as Zinc L-Methionine Sulfate) 3.3 mg Copper (as Copper Gluconate) 0.333 mg Manganese (as Manganese Citrate) 0.333 mg Potassium (as Potassium Citrate) 33 mg Vitamin K2 (as Naturally Derived MK-7 [Menaquinone-7]) 15 mcg Boron (as Boron Citrate) 1 mg.
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BoneUp Three Per Day
90 count, 180 count — US label
Per 1 capsule: Vitamin C (as Ascorbic Acid) 33.3 mg Vitamin D (as D3 Cholecalciferol) 8.3 mcg (333 IU) Calcium (Elemental) (from Microcrystalline Hydroxyapatite) 333.3 mg Magnesium (as Magnesium Oxide) 116.7 mg Zinc (as Zinc L-Methionine Sulfate) 3.3 mg Copper (as Copper Gluconate) 0.333 mg Manganese (as Manganese Citrate) 0.333 mg Vitamin K2 (as Naturally Derived MK-7 [Menaquinone-7]) 15 mcg Boron (as Boron Citrate) 1 mg.
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Ultra BoneUp
240 Tablets — US label
Per 2 tablets: Vitamin C (as Calcium Ascorbate) 66.7 mg Vitamin D (as D3 Cholecalciferol) 16.7 mcg (667 IU) Calcium (Elemental) (from Microcrystalline Hydroxyapatite) 400 mg Magnesium (as Magnesium Oxide) 166.7 mg Zinc (as Zinc L-Methionine Sulfate) 3.3 mg Copper (as Copper Gluconate) 0.333 mg Manganese (as Manganese Citrate) 0.333 mg Potassium (as Potassium Citrate) 33 mg Silicon (Molecular Clusters of Stabilized Silicic Acid) 3.33 mg Vitamin K2 (as Naturally Derived MK-7 [Menaquinone-7]) 40 mcg Boron (as Boron Citrate) 1 mg Type II Collagen (from Bovine Cartilage) 16.66 mg.
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Life Extension
Calcium Citrate with Vitamin D
200 capsules; one-capsule serving
One capsule lists 200 mg calcium from calcium citrate and 2.5 mcg vitamin D3 as cholecalciferol. The selected bottle contains 200 capsules.
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Momentous
Calcium — Di-Calcium Malate
60 capsules · 60 one-capsule servings
The manufacturer lists 250 mg calcium as di-calcium malate from Albion per capsule. The bottle contains 60 capsules, with hypromellose, magnesium stearate, silica and microcrystalline cellulose listed as other ingredients.
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Natural Factors
Calcium & Magnesium Citrate with D3
210 tablets
Per tablet: calcium 250 mg, magnesium 250 mg, potassium 20 mg, zinc 5 mg, manganese 1 mg, silicon from horsetail 100 mcg and D3 2.5 mcg (100 IU). Magnesium is citrate/oxide.
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Natural Factors
Calcium Citrate — 350 mg
90 tablets
One tablet provides 350 mg calcium as citrate (27% of the US Daily Value). The selected bottle contains 90 tablets.
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Nature Made
Calcium 600 mg with Vitamin D3 Softgels
100 softgels
One softgel supplies 600 mg calcium as calcium carbonate and 10 mcg (400 IU) vitamin D3; 10 kcal and 1 g fat.
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Nature Made
Calcium, Magnesium and Zinc with Vitamin D3 Tablets
300 tablets
Per tablet: calcium 333 mg as calcium carbonate, magnesium 133 mg as magnesium oxide, zinc 5 mg as zinc sulfate and vitamin D3 5 mcg (200 IU).
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Nature's Bounty
Calcium Magnesium Zinc with Vitamin D3
100 coated caplets
Per 3 caplets: vitamin D3 600 IU (15 mcg), calcium 1,000 mg, magnesium 400 mg and zinc 25 mg. Manufacturer lists 33 servings per bottle.
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NATURELO
Bone Strength Plant Calcium Complex
120 capsules · 30 servings
A four-capsule serving lists 600 mg calcium, 200 mg magnesium, 25 mcg vitamin D3 and 60 mcg vitamin K2, plus vitamin C and other minerals.
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NOW Foods
Calcium Citrate Tablets
100 tablets · 50 servings
Two tablets list 600 mg calcium from calcium citrate, 300 mg magnesium, 10 mcg vitamin D2, and zinc, copper and manganese.
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Pure Encapsulations
Calcium (citrate)
60 Capsules / 180 Capsules — US label
Per 2 capsules: 300 mg calcium as calcium citrate.
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Solgar
Calcium Citrate with Vitamin D3 Tablets
120 tablets — US manufacturer listing
Calcium 1,000 mg as citrate and vitamin D3 15 mcg (600 IU) per four tablets; sodium 20 mg, fibre 1 g and 10 calories.
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Solgar
Calcium Magnesium Citrate
250 tablets; 50 five-tablet servings
Per five tablets, the label lists 1,000 mg calcium from calcium citrate and 500 mg magnesium from magnesium oxide and citrate. The pictured bottle contains 250 tablets.
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Solgar
Calcium Magnesium Plus Boron Tablets
250 tablets — US manufacturer listing
Calcium 1,000 mg, magnesium 400 mg, boron 3 mg and sodium 10 mg per three tablets.
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Solgar
Calcium Magnesium Plus Zinc Tablets
100 tablets — US manufacturer listing
Calcium 1,000 mg, magnesium 400 mg, zinc 15 mg and sodium 15 mg per three tablets.
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Solgar
Calcium Magnesium with Vitamin D3 Tablets
150 tablets — US manufacturer listing
Calcium 1,000 mg, magnesium 500 mg, vitamin D3 10 mcg (400 IU) and sodium 20 mg per five tablets.
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Thorne
Calcium 250 mg — Dicalcium Malate
120 capsules — US label
Per 1 capsule: Calcium (as DiCalcium Malate) 250 mg.
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Thorne
Calcium-Magnesium Malate
240 capsules — US label
Per 1 capsule: Magnesium (Malate) 100 mg; Calcium (Malate) 100 mg.
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