PlainVitamins

Calcium & Magnesium

by NOW · tablet or pill · 250 tablets

  • On the market (NIH)
  • UPC 7 33739 01272 2
  • DSLD label 313641
  • Serving 2 tablets
  • 125 servings

Calcium & Magnesium by NOW lists 4 ingredients, 4 with an amount per serving of 2 tablets, such as 1 g of calcium and 500 mg of magnesium. Its current label entered the NIH Dietary Supplement Label Database on June 20, 2024.

What is in Calcium & Magnesium?

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 & Magnesium: Supplement Facts rows against the market (DSLD label 313641, January 2026 release)
IngredientAmount% DVAmong products listing it
Calciumelemental, 1,000 mg1 g77%Calcium in Calcium & Magnesium against 17,831 products1,000 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg1,000 mg

Higher than 95% of 17,831 products listing calcium (median 115 mg).

Calciumas Calcium Ascorbate, Calcium Carbonate, Calcium Citrate3,004 mg
Magnesiumelemental500 mg119%Magnesium in Calcium & Magnesium against 14,003 products500 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg500 mg

Higher than 96% of 14,003 products listing magnesium (median 86 mg). 1.4 times the adult UL a day.

Magnesiumas Magnesium Ascorbate, Magnesium Citrate, Magnesium Oxide972 mg

Source: NIH ODS Dietary Supplement Label Database, label 313641 (entered June 20, 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 1,000 mg of calcium is higher than 95% of the 17,831 calcium products that print an amount; 314 list more.
  • At 1 serving a day, the most its directions give, the label lists 500 mg of magnesium, 1.4 times the adult Tolerable Upper Intake Level.

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. Can be taken in divided doses.
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
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 313641.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Hypromellose, Calcium Carbonate, Polydextrose, Glycerin, Medium Chain Triglyceride, Stearic Acid, Croscarmellose Sodium, Magnesium Stearate, Hydroxypropyl Cellulose, Silicon Dioxide.

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

How many labels does Calcium & Magnesium have?

18 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 335216 Entered July 24, 2025 · off the market January 21, 2025 · 250 tablets · UPC 7 33739 01272 2
  2. Label 313641 (current) Entered June 20, 2024 · on the market · 250 tablets · UPC 7 33739 01272 2
  3. Label 313640 Entered June 20, 2024 · on the market · 100 tablets · UPC 7 33739 01270 8
  4. Label 244802 Entered April 22, 2021 · off the market August 17, 2023 · 100 tablets · UPC 7 33739 01270 8
  5. Label 210414 Entered December 22, 2019 · off the market February 12, 2024 · 250 tablets · UPC 7 33739 01272 2
  6. Label 210413 Entered December 22, 2019 · off the market February 12, 2024 · 100 tablets · UPC 7 33739 01270 8
  7. Label 70549 Entered February 24, 2017 · off the market December 19, 2018 · 250 tablets · UPC 7 33739 01272 2
  8. Label 70547 Entered February 24, 2017 · off the market December 19, 2018 · 100 tablets · UPC 7 33739 01270 8
  9. Label 51688 Entered October 22, 2015 · off the market November 30, 2016 · 250 tablets · UPC 7 33739 01272 2
  10. Label 51687 Entered October 22, 2015 · off the market November 30, 2016 · 100 tablets · UPC 7 33739 01270 8
  11. Label 49960 Entered September 25, 2015 · off the market May 1, 2017 · 8 oz. · UPC 7 33739 01243 2
  12. Label 45739 Entered May 22, 2015 · off the market September 30, 2015 · 250 tablets · UPC 7 33739 01272 2
  13. Label 45738 Entered May 22, 2015 · off the market September 30, 2015 · 100 tablets · UPC 7 33739 01270 8
  14. Label 40273 Entered December 29, 2014 · off the market July 21, 2015 · 8 oz. · UPC 7 33739 01243 2
  15. Label 37001 Entered October 10, 2014 · off the market April 24, 2015 · 250 tablets · UPC 7 33739 01272 2
  16. Label 37000 Entered October 10, 2014 · off the market April 24, 2015 · 100 tablets · UPC 7 33739 01270 8
  17. Label 14718 Entered October 25, 2012 · off the market July 2, 2014 · 250 tablets · UPC 7 33739 01272 2
  18. Label 14717 Entered October 25, 2012 · off the market July 2, 2014 · 100 tablets · UPC 7 33739 01270 8

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 (distributor), Bloomingdale, IL. All NOW products.

Where next?