mineral

Calcium supplements

Half of the 17,831 calcium supplements in the NIH label database that print an amount list 115 mg or less per serving; the middle half list 50 mg to 252 mg, and 1 in 213 of the 17,666 with a plausible amount give more than the adult upper limit at the most servings their labels direct (DSLD version 9.4.0, January 2026). The 376 products whose only supplement ingredient is calcium list a median of 300 mg, and 1 in 125 of them give more than the upper limit.

How much calcium do supplements contain?

The median product lists 115 mg per serving. One in ten lists 23 mg or less, one in ten 540 mg or more. The amount printed most often is 100 mg (1,005 products).

How do the amounts compare with the Daily Value and the upper limit?

The FDA Daily Value for calcium is 1,300 mg (adults and children 4 and older). The median product gives 9% of it per serving; the 90th percentile 42%.

The adult Tolerable Upper Intake Level is 2,500 mg a day (total intake, adults 19-50 (2,000 mg from 51 years)). At the most servings their labels direct, 83 of the 17,666 products with a plausible amount (0.5%) give more than that from the supplement alone (what counts as plausible).

The upper limit is for total intake from food, water and supplements unless stated, and does not apply under medical supervision. A label amount is what the maker printed. This is data, not advice: the NIH ODS fact sheets explain what each nutrient does.

Which forms of calcium do labels name?

Calcium carbonate is the form named most often: 4,133 of the 19,724 calcium products (21%), ahead of calcium phosphate (2,838, 14%) and calcium citrate (2,770, 14%). A product naming two forms counts in both; the table below gives every form.

• Calcium carbonate
• Calcium phosphate
• Calcium citrate
• Calcium malate
• Calcium lactate
• Calcium gluconate
• Calcium hydroxyapatite

Which products list the most calcium?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

• VanillaON Optimum Nutrition2,070 mg
• StrawberryON Optimum Nutrition2,070 mg
• BananaON Optimum Nutrition2,070 mg
• Mass Tech Cookies and CreamMuscleTech2,000 mg
• Chewable Calcium Citrate 500 mg Calcium 500 IU Vitamin D3 Wild CherryBariatric Advantage2,000 mg
• ChocolateON Optimum Nutrition1,990 mg
• Super Mass Gainer Cookies & CreamDymatize1,950 mg
• Super Mass Gainer Gourmet VanillaDymatize1,950 mg

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 150 mg; those entered in 2025, 118 mg.

In which products and brands?

Brands listing it most: Douglas Laboratories (274), Nature's Plus (236), Source Naturals (203), Nature's Way (200), NutraBio (189), Bronson (162), 21st Century (160), NOW (146), Country Life (138), The Vitamin Shoppe (127).

Every product listing calcium

19,724 products, A to Z by name (page 90 of 395), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Chelated Cal-MagNeoLife Nutritionals300 mg
• Chelated Cal-MagCarlson200 mg
• Chelated Cal-Mag 1000 IU Vitamin D3NeoLife Nutritionals · off the market300 mg
• Chelated Cal-Mag 2:1 RatioCarlson · off the market200 mg
• Chelated Cal-Mag 400 IU Vitamin D3NeoLife Nutritionals · off the market300 mg
• Chelated Cal-Mag TabletVitalBulk1,000 mg
• Chelated CalciumSolgar · off the market1,000 mg
• Chelated CalciumNHC Natural Healthy Concepts500 mg
• Chelated CalciumCarotec288 mg
• Chelated Calcium 250 mgCarlson · off the market500 mg
• Chelated Calcium 500 mgCarlson500 mg
• Chelated Calcium And MagnesiumSundown Naturals500 mg
• Chelated Calcium MagnesiumVitamin World500 mg
• Chelated Calcium MagnesiumGood 'N Natural · off the market500 mg
• Chelated Calcium MagnesiumBluebonnet500 mg
• Chelated Calcium Magnesium 1:1Solgar500 mg
• Chelated Calcium Magnesium ZincRadiance1,000 mg
• Chelated Calcium Magnesium ZincGood 'N Natural · off the market1,000 mg
• Chelated Calcium Magnesium ZincRadiance Platinum1,000 mg
• Chelated Calcium Magnesium ZincAmerican Health1,000 mg
• Chelated Calcium Magnesium ZincPuritan's Pride1,000 mg
• Chelated Calcium Magnesium Zinc USPGood 'N Natural · off the market1,000 mg
• Chelated Chromium 200 mcgCarlson26 mg
• Chelated Copper Amino Acid Chelate 2 mgPuritan's Pride Premium · off the market103 mg
• Chelated Copper Amino Acid Chelate 2 mgPuritan's Pride103 mg
• Chelated IronNature's Sunshine62 mg
• Chelated Magnesium Calcium 2:1Solgar300 mg
• Chelated MineralUSANA · off the market135 mg
• Chelated MineralsCarlson400 mg
• Chelated MultiminHoltraCeuticals75 mg
• Chelated MultimineralsBluebonnet1,000 mg
• Chelated Multiminerals Iron-FreeBluebonnet1,000 mg
• Chelated Solamins MultimineralSolgar500 mg
• Chelated Zinc 50 mgAvPak · off the market125 mg
• Chelated Zinc 50 mg21st Century125 mg
• Chelated Zinc 50 mgDr. Rico Perez115 mg
• Chelated-C ComplexDouglas Laboratories60 mg
• Chelated-C PlusDouglas Laboratories60 mg
• Chem/MetNew Sun3 mg
• Cherifer PGM 10-22 for TeenagersHeight Is Might · off the market150 mg as transcribed, likely a slip
• Chewable 50+ Men Multivitamin + Supporting Herbs Wild BerrySuper Nutrition SimplyOne · off the market50 mg
• Chewable 50+ Women Multivitamin + Supporting Herbs Wild BerrySuper Nutrition SimplyOne50 mg
• Chewable Adult MultiCountry Life · off the market50 mg
• Chewable Adult Multi Pineapple-Orange FlavorCountry Life50 mg
• Chewable Advanced Multi EA Mixed FruitBariatric Advantage Innovations85 mg
• Chewable Advanced Multi EA StarwberryBariatric Advantage Innovations170 mg
• Chewable Advanced Multi EA StrawberryBariatric Advantage Innovations85 mg
• Chewable Advanced Multi EA without Iron Mixed FruitBariatric Advantage Innovations170 mg
• Chewable Cal Mag PlusShaklee1,000 mg
• Chewable Cal Mag Plus Orange FlavorShaklee · off the market325 mg

Where next?

• Calcium gummies
• Calcium powder
• Liquid calcium
• Check an amount of calcium
• Labels above the upper limit
• All ingredients