PlainVitamins

Calcium Citrate

by NOW · tablet or pill · 250 tablets

  • On the market (NIH)
  • UPC 7 33739 01232 6
  • DSLD label 313645
  • Serving 2 tablets
  • 125 servings

Calcium Citrate by NOW lists 6 ingredients, 6 with an amount per serving of 2 tablets, such as 10 mcg (400 IU) of vitamin D, 600 mg of calcium, 300 mg of magnesium and 15 mg of zinc. Its current label entered the NIH Dietary Supplement Label Database on May 23, 2024.

What is in Calcium Citrate?

Each row as the label prints it, per serving of 2 tablets. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).

Calcium Citrate: Supplement Facts rows against the market (DSLD label 313645, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Das Vitamin D2400 IU10 mcg (400 IU)50%Vitamin D in Calcium Citrate against 14,175 products10 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg10 mcg

57% of 14,175 products listing vitamin D give more (median 15 mcg).

Calciumas Calcium Citrate600 mg46%Calcium in Calcium Citrate against 17,831 products600 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg600 mg

Higher than 91% of 17,831 products listing calcium (median 115 mg).

Magnesiumas Magnesium Aspartate, Magnesium Oxide300 mg71%Magnesium in Calcium Citrate against 14,003 products300 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg300 mg

Higher than 87% of 14,003 products listing magnesium (median 86 mg).

Zincas Zinc Chelate15 mg136%Zinc in Calcium Citrate against 13,186 products15 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg15 mg

Higher than 56% of 13,186 products listing zinc (median 11 mg).

Copperas Copper Chelate1 mg111%Copper in Calcium Citrate against 6,468 products1 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg1 mg

40% of 6,468 products listing copper give more (median 1 mg).

Manganeseas Manganese Chelate5 mg217%Manganese in Calcium Citrate against 7,016 products5 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg5 mg

Higher than 80% of 7,016 products listing manganese (median 2 mg).

Source: NIH ODS Dietary Supplement Label Database, label 313645 (entered May 23, 2024), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.

Is that a lot?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • Its 600 mg of calcium is higher than 91% of the 17,831 calcium products that print an amount; 1,267 list more.

The NIH database records one serving a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.

The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.

Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.

Which products have the closest formulas?

6 products list the very same ingredients; the nearest amounts come first.

Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.

What does the label say about taking it?

Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.

Directions
Suggested usage: Take 2 tablets daily, preferably in divided doses, with food.
Warnings
Caution: For adults only. Keep out of reach of children.
Consult physician if pregnant/nursing, taking medication, or have a medical condition.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or sesame ingredients. Produced in a GMP facility that processes other ingredients containing these allergens.
Allergens and what it does not contain
Non-GMO
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or sesame ingredients.
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 313645.

What else is on the label?

Other ingredients: Hydroxypropyl Cellulose, Hypromellose, Calcium Carbonate, Glycerin, Croscarmellose Sodium, Silicon Dioxide, Magnesium Stearate, Stearic Acid.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Quality Assured; Triangle K (Kosher).

How many labels does Calcium Citrate have?

13 labels are on file under this name since October 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 313645 (current) Entered May 23, 2024 · on the market · 250 tablets · UPC 7 33739 01232 6
  2. Label 210411 Entered December 22, 2019 · off the market February 12, 2024 · 250 tablets · UPC 7 33739 01232 6
  3. Label 210410 Entered November 21, 2019 · on the market · 100 tablets · UPC 7 33739 01230 2
  4. Label 70395 Entered February 24, 2017 · off the market December 19, 2018 · 250 tablets · UPC 7 33739 01232 6
  5. Label 70391 Entered February 24, 2017 · off the market December 19, 2018 · 100 tablets · UPC 7 33739 01230 2
  6. Label 60653 Entered June 24, 2016 · off the market November 30, 2016 · 250 tablets · UPC 7 33739 01232 6
  7. Label 60650 Entered June 24, 2016 · off the market November 30, 2016 · 100 tablets · UPC 7 33739 01230 2
  8. Label 51472 Entered October 22, 2015 · off the market March 31, 2016 · 250 tablets · UPC 7 33739 01232 6
  9. Label 51469 Entered October 22, 2015 · off the market March 31, 2016 · 100 tablets · UPC 7 33739 01230 2
  10. Label 37197 Entered October 10, 2014 · off the market September 30, 2015 · 250 tablets · UPC 7 33739 01232 6
  11. Label 37196 Entered October 10, 2014 · off the market September 30, 2015 · 100 tablets · UPC 7 33739 01230 2
  12. Label 14686 Entered October 25, 2012 · off the market August 5, 2014 · 250 tablets · UPC 7 33739 01232 6
  13. Label 14685 Entered October 25, 2012 · off the market August 5, 2014 · 100 tablets · UPC 7 33739 01230 2

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names NOW FOODS (manufacturer), Bloomingdale, IL. All NOW products.

Where next?