A form of calcium
Calcium citrate supplements
2,770 calcium products in the NIH label database list calcium as calcium citrate (14% of the 19,724 calcium products); their median is 200 mg of calcium per serving, against 115 mg across all calcium products; the 75 whose only supplement ingredient is calcium list a median of 300 mg (DSLD version 9.4.0, January 2026).
How does calcium citrate compare with the other forms?
The median amount of calcium per serving in products naming each form; the count in brackets. The amount is the calcium the label gives, as printed (the Supplement Facts row normally states the element; a row named as the compound usually gives the compound's weight and is left out of these figures).
Median calcium per serving by form
Source: Supplement Facts rows and their forms, NIH ODS Dietary Supplement Label Database version 9.4.0, current labels.
- Products
- 2,7701,976 on the market
- Median calcium per serving
- 200 mgall calcium products: 115 mg
- Share of calcium products
- 14%2,770 of 19,724
Is the amount the calcium or the whole calcium citrate?
A Supplement Facts row normally states the calcium itself (a row like "Calcium (as calcium citrate)"); a row named as the compound (a row like "Calcium citrate") usually states the compound's weight, which includes what the calcium is bound to and is larger than the calcium it supplies. The front of a bottle may print either. Of the 2,770 products here, 2,764 give the calcium in its own row (15 of them an amount far outside what other labels list, or one their own %DV disagrees with); 3 give only a row named as the compound, left out of the medians and counts on this site; 3 give no amount of their own or one in another unit.
The adult Tolerable Upper Intake Level for calcium is 2,500 mg a day; it covers total intake, adults 19-50, 2,000 mg from 51 years. At the most servings their labels direct, 25 of the 2,749 calcium citrate products with a plausible amount (0.9%) give more than that.
Source: Supplement Facts rows of each product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; upper limit: Institute of Medicine Dietary Reference Intakes (2011) (what counts as plausible).
What else do these products contain?
| Ingredient | Share of these products | Median here | Median, all products |
|---|---|---|---|
| Magnesium | 86% | 125 mg | 86 mg |
| Vitamin D | 73% | 10 mcg | 15 mcg |
| Zinc | 61% | 13.15 mg | 11 mg |
| Vitamin C | 60% | 200 mg | 100 mg |
| Vitamin B6 | 54% | 18.75 mg | 6 mg |
| Vitamin B12 | 53% | 75 mcg | 36 mcg |
| Manganese | 53% | 2 mg | 2 mg |
| Folate | 52% | 400 mcg | 400 mcg |
| Niacin | 52% | 30 mg | 20 mg |
| Vitamin E | 50% | 100 IU | 30 IU |
Which products are they?
60 of the 2,770 (on-market products first, the newest label first), ordered by the amount of calcium per serving, largest first; an amount that looks like a slip or a compound's weight comes last, marked.
- Cal-Mag Citrate with Vitamin D-3 & K-2 2:1 RatioSolaray1,000 mg
- Calcium Citrate Chewables 1000 mg Natural Orange FlavorSolaray1,000 mg
- Calcium Magnesium ZincSolaray1,000 mg
- Calcium with Vitamin D3 Powder UnflavoredKirkman1,000 mg
- Calcium Citrate with Vitamin D-3 1000 mgSolaray1,000 mg
- Calcium Magnesium Zinc & Vitamin D3Pure Naturals1,000 mg
- Enhanced Absorption Calcium Magnesium 2:1 Ratio with Vitamin D-2Solaray1,000 mg
- Calcium & MagnesiumNOW1,000 mg
- Calcium 1,000 mg Magnesium 500 mg Zinc 25 mg with Vitamin DCountry Life Target-Mins1,000 mg
- Chelated Multiminerals Iron-FreeBluebonnet1,000 mg
- Multiminerals & BoronBluebonnet1,000 mg
- Multiminerals & Boron Iron-FreeBluebonnet1,000 mg
- OsteoPrime Plus Calcium & MagnesiumNature's Way800 mg
- Cal Mag 750DNA Dynamic Nutritional Associates750 mg
- Calcium & MagnesiumButterfly Express667 mg
- Bone StrengthNutraChamps600 mg
- Cal Mag CrystalsDNA Dynamic Nutritional Associates600 mg
- Calcium PLUSCelebrate600 mg
- Calcium & Magnesium Mineral Complex 750 mgNature's Way500 mg
- Calcium Citrate 500 mgCooper Complete500 mg
- Calcium Citrate Soft Chews CaramelCelebrate500 mg
- Calcium PLUS 500 Mixed FruitCelebrate500 mg
- Cal-Mag Zinc + D3Paradise Earth's Blend500 mg
- Calcium PLUS 500 Cherry TartCelebrate500 mg
- Calcium Citrate with Vitamin DCountry Life500 mg
- Calcium MagnesiumBluebonnet500 mg
- Active Women's MultivitaminSuper Nutrition400 mg
- Nutra-Support BoneCarlson400 mg
- Alive! Max3 Potency Adult Complete Multivitamin Tablets with IronNature's Way325 mg
- CalciumPerformance Lab300 mg
- Kid's Chewable Calcium 250 mg Natural Vanilla FlavorCarlson250 mg
- Super Nu-Thera without A & DKirkman175 mg
- Natural ChangesNature's Sunshine150 mg
- Calcium 2InterPlexus Whole Body Health116 mg
- Cardio Cuts 4.0 Miami SunriseNDS Nutrition112 mg
- Cardio Cuts 4.0 Cherry SlushNDS Nutrition112 mg
- Teen Fermented Multivitamin+Codeage110 mg
- Women's Fermented MultivitaminCodeage110 mg
- Men's Fermented MultivitaminCodeage110 mg
- Max for Women Iron FreeCountry Life100 mg
- Multi-VitaminBaar Nature's Blessing100 mg
- Super Carb PineappleNutraBio95 mg
- Mineral Citrate ComplexSwanson75 mg
- Women's Golden MultivitaminSolaray75 mg
- Kid Vits Juicy OrangeNOW Kids65 mg
- Glow Sticks Sun-Kissed CitrusSeroVital50 mg
- Hydro Raspberry LemonadeBLDR50 mg
- Ladies' OneBluebonnet50 mg
- Ladies' One 40+Bluebonnet50 mg
- One for MenBluebonnet50 mg
- Serene SleepAN American Nutriceuticals35 mg
- Maxi OneBluebonnet25 mg
- Multi One Iron-FreeBluebonnet25 mg
- Multiple Assorted Fruit FlavorsBluebonnet Rainforest Animalz25 mg
- Multiple Orange FlavorBluebonnet Rainforest Animalz25 mg
- The Grind Dragon Fruit YuzuAxe & Sledge Supplements20 mg
- Nattokinase ProEnzyme Science14 mg
- Stress EaseAN American Nutriceuticals14 mg
- Stress Relief PlusEarth's Bounty14 mg
- One Daily Superfood Multi-Vitamin No IronParadise Earth's Blend10 mg
Source: NIH ODS Dietary Supplement Label Database version 9.4.0; the form each label names for its row. Daily Values: the FDA's Daily Value page.
Which brands make them?
Douglas Laboratories (186), Bluebonnet (74), Country Life (64), Nature's Way (54), Pure Encapsulations (43), Integrative Therapeutics (37), Nature's Plus (36), NOW (35), Natural Factors (34), Metagenics (33).