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.
- Products listing it
- 19,72417,831 print an amount; 1,556 list it inside a blend without an amount
- Median per serving
- 115 mgmiddle half 50 mg to 252 mg
- FDA Daily Value
- 1,300 mgthe median is 9% of it
- Adult upper limit (IOM)
- 2,500 mg83 products go above it a day
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).
Products by amount of calcium per serving
18,010 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
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.
Sources: 21 CFR 101.9(c)(8)(iv) (Daily Values); Institute of Medicine, DRI summary tables (2011) (upper limits); on reading them, the FDA's Daily Value page.
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.
Products by the form of calcium on the label
Count, and the median amount per serving in that form.
| Form | Products | Share of calcium products | Median per serving |
|---|---|---|---|
| Calcium carbonate | 4,133 | 21% | 200 mg |
| Calcium phosphate | 2,838 | 14% | 108 mg |
| Calcium citrate | 2,770 | 14% | 200 mg |
| Calcium malate | 681 | 3% | 200 mg |
| Calcium lactate | 343 | 2% | 75 mg |
| Calcium gluconate | 283 | 1% | 250 mg |
| Calcium hydroxyapatite | 270 | 1% | 500 mg |
Source: the form each label gives for its calcium row (DSLD "forms"), current labels.
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.
| Year | Products | Median per serving |
|---|---|---|
| 2011 | 433 | 150 mg |
| 2012 | 1,075 | 200 mg |
| 2013 | 1,258 | 162 mg |
| 2014 | 867 | 120 mg |
| 2015 | 922 | 119 mg |
| 2016 | 902 | 117 mg |
| 2017 | 975 | 115 mg |
| 2018 | 827 | 100 mg |
| 2019 | 974 | 106.5 mg |
| 2020 | 1,729 | 100 mg |
| 2021 | 1,404 | 100 mg |
| 2022 | 1,720 | 115 mg |
| 2023 | 1,564 | 100 mg |
| 2024 | 1,789 | 106 mg |
| 2025 | 1,571 | 118 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing calcium by DSLD product type
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 42 of 395), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- Beta-ZymeNeoLife Nutritionals459 mg
- BetacolSP Standard Processin a blend
- Betaine HCLRemedys Nutritionin a blend
- Betaine HCLDCin a blend
- Betaine HCL +KAL · off the market32 mg
- Betaine HCL + 250 mgKAL32 mg
- Betaine HCl 350 mgNature's Life15 mg
- Betaine HCl PlusDouglas Cooper Co.20 mg
- Betaine HydrochlorideWonder Laboratoriesin a blend
- Betaine HydrochlorideSP Standard Processin a blend
- Betaine Hydrochloride 600 mg With PepsinCountry Life100 mg
- Betaine Hydrochloride With Pepsin 600 mgCountry Life · off the market103 mg
- BETTER//BROTH French OnionPruvit50 mg
- Better//Broth Keto ThymePruvit50 mg
- Better//Broth Salted CaramelPruvit40 mg
- BetterNatalPharmics · off the market200 mg
- Beveri Immunity Boost Natural Tangerine Flavorbeveri50.4 mg
- Beveri Immunity Boost Natural Tropical Fruit Flavorbeveri53.9 mg
- BevonZuventus Healthcare Ltd. · off the market125 mg as transcribed, likely a slip
- BeWell Daily Multivitamin & MineralArbonne500 mg
- BeWell Superfood GreensArbonne · off the market30 mg
- BeWell Superfood Greens SpirulinaArbonne30 mg
- Beyond BasicsMRM200 mg
- Beyond Collagen FlavorlessLive Conscious6 mg
- Beyond CoQ10Natures Plus10 mg
- Beyond CoQ10NaturesPlus10 mg
- Beyond FoodCountry Life · off the market200 mg
- Beyond Food Iron FreeCountry Life200 mg
- Beyond Osteo-fx Tropical VanillaYoungevity1,200 mg
- Beyond Osteo-fx Tropical Vanilla FlavorYoungevity1,200 mg
- Beyond Raw Infinite TestGNC Beyond Raw625 mg
- Beyond Tangy TangerineYoungevity50 mg
- Beyond Tangy Tangerine 2.0Youngevity50 mg
- Beyond Tangy Tangerine 2.0 Citrus Peach FusionYoungevity120 mg
- BHB 11.7 g UnflavoredNutricost1,128 mg
- BHB 13.9 g UnflavoredNutricost · off the market7,228 mg as transcribed, likely a slip
- BHB Berry LemonadeNatures Plus KetoLiving65 mg
- BHB Exogenous Ketones Blue Ice Popfitfactor KETO540 mg
- BHB Exogenous Ketones Peach Mangofitfactor KETO540 mg
- BHB Keto BurnSNAP28 mg
- BHB Keto SaltsNatures Craft62 mg
- BHB SaltsOweli62 mg
- BHB Salts Orange MangoNutricost1,128 mg
- BID MultiSelectMoss Nutrition50 mg
- BID MultiSelect (without Copper, Iron, Vitamin K)Moss Nutrition50 mg
- Big Max Rich ChocolateMM Sports Nutritionin a blend
- Bigger By The DayRich Piana 5% Nutrition29 mg
- Bilberry 60 mgBotanic Choice90 mg
- Bilberry ExtractSource Naturals · off the market59 mg
- Bilberry Extract 100 mgSource Naturals59 mg