PlainVitamins

Magnesium & Calcium

by NOW · tablet or pill · 250 tablets

  • On the market (NIH)
  • UPC 7 33739 01278 4
  • DSLD label 210416
  • Serving 3 tablets
  • 83 servings

Magnesium & Calcium by NOW lists 4 ingredients, 4 with an amount per serving of 3 tablets, such as 25 mcg (1,000 IU) of vitamin D3, 400 mg of calcium, 800 mg of magnesium and 15 mg of zinc. Its current label entered the NIH Dietary Supplement Label Database on December 22, 2019.

What is in Magnesium & Calcium?

Each row as the label prints it, per serving of 3 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).

Magnesium & Calcium: Supplement Facts rows against the market (DSLD label 210416, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin D3as CholecalciferolVitamin D3 (Alt. Name: Cholecalciferol) Note: 1,000 IU25 mcg (1,000 IU)125%Vitamin D in Magnesium & Calcium against 14,175 products25 mcg per serving; the middle half of products list 10 mcg to 25 mcg, the median 15 mcg.DV 20 mcgUL 100 mcg25 mcg

Higher than 59% of 14,175 products listing vitamin D (median 15 mcg).

Calciumas Aquamin TG seaweed derived Minerals, Calcium CitrateCalcium (Form: from Aquamin TG seaweed derived Minerals, and Calcium Citrate)400 mg31%Calcium in Magnesium & Calcium against 17,831 products400 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg400 mg

Higher than 82% of 17,831 products listing calcium (median 115 mg).

Magnesiumas Aquamin TG seaweed derived Minerals, Magnesium Citrate, Magnesium GlycinateMagnesium (Form: from Magnesium Oxide, Magnesium Glycinate, Magnesium Taurinate, Magnesium Citrate, and Aquamin TG seaweed derived Minerals)800 mg190%Magnesium in Magnesium & Calcium against 14,003 products800 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg800 mg

Higher than over 99% of 14,003 products listing magnesium (median 86 mg). 2.3 times the adult UL a day.

Zincas L-OptiZinc MonomethionineZinc (Form: from L-OptiZinc Monomethionine)15 mg136%Zinc in Magnesium & Calcium 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).

Source: NIH ODS Dietary Supplement Label Database, label 210416 (entered December 22, 2019), version 9.4.0. See the label on DSLD. 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:

  • At 1 serving a day, the most its directions give, the label lists 800 mg of magnesium, 2.3 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 3 tablets daily, preferably in divided doses, with food or at bedtime.
Warnings
Caution: For adults only.
Consult physician if pregnant/nursing, taking medication, or have a medical condition.
Keep out of reach of children.
Not manufactured with wheat, gluten, soy, milk, egg, fish or shellfish 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 or shellfish ingredients.
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 210416.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Maltodextrin, Croscarmellose Sodium, Stearic Acid, Vegetarian Coating, Magnesium Stearate, Silicon Dioxide.

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

How many labels does Magnesium & Calcium have?

12 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 210416 (current) Entered December 22, 2019 · on the market · 250 tablets · UPC 7 33739 01278 4
  2. Label 210415 Entered December 22, 2019 · on the market · 100 tablets · UPC 7 33739 01277 7
  3. Label 77543 Entered December 22, 2017 · off the market December 19, 2018 · 100 tablets · UPC 7 33739 01277 7
  4. Label 77555 Entered August 22, 2017 · off the market December 19, 2018 · 250 tablets · UPC 7 33739 01278 4
  5. Label 70555 Entered February 24, 2017 · off the market July 13, 2017 · 250 tablets · UPC 7 33739 01278 4
  6. Label 70554 Entered February 24, 2017 · off the market July 13, 2017 · 100 tablets · UPC 7 33739 01277 7
  7. Label 56872 Entered February 23, 2016 · off the market November 30, 2016 · 250 tablets · UPC 7 33739 01278 4
  8. Label 56828 Entered February 23, 2016 · off the market November 30, 2016 · 100 tablets · UPC 7 33739 01277 7
  9. Label 51711 Entered October 22, 2015 · off the market December 23, 2015 · 250 tablets · UPC 7 33739 01278 4
  10. Label 51707 Entered October 22, 2015 · off the market December 23, 2015 · 100 tablets · UPC 7 33739 01277 7
  11. Label 14545 Entered April 25, 2013 · off the market September 30, 2015 · 100 tablets · UPC 7 33739 01277 7
  12. Label 14547 Entered October 25, 2012 · off the market September 30, 2015 · 250 tablets · UPC 7 33739 01278 4

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?