PlainVitamins

Calcium Ascorbate

by NOW · powder · 3 lbs

  • On the market (NIH)
  • UPC 7 33739 00754 4
  • DSLD label 14472
  • Serving 0.25 tsp (1.12 g)
  • 1215 servings

Calcium Ascorbate by NOW lists 2 ingredients, 2 with an amount per serving of 0.25 tsp, such as 890 mg of vitamin C and 100 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on October 25, 2012.

What is in Calcium Ascorbate?

Each row as the label prints it, per serving of 0.25 tsp. 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 Ascorbate: Supplement Facts rows against the market (DSLD label 14472, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Calcium AscorbateVitamin C (Form: from Calcium Ascorbate)890 mg1,483%Vitamin C in Calcium Ascorbate against 18,583 products890 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg890 mg

Higher than 91% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 2,670 mg. 1.3 times the adult UL a day.

Calciumas Calcium AscorbateCalcium (Form: from Calcium Ascorbate)100 mg10%Calcium in Calcium Ascorbate against 17,831 products100 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg100 mg

53% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 300 mg.

Source: NIH ODS Dietary Supplement Label Database, label 14472 (entered October 25, 2012), 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 3 servings a day, the most its directions give, the label lists 2,670 mg of vitamin C, 1.3 times the adult Tolerable Upper Intake Level.

The NIH database records 1 to 3 servings 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: As a dietary supplement, take 1/4 level teaspoon one to three times daily. Consider taking this product in combination with NOW(R) Bioflavonoids, Alpha Lipoic Acid and Enzogenol(R).
Allergens and what it does not contain
Contains no sugar, salt, starch, yeast, wheat, gluten, soy, milk, egg, shellfish or preservatives.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 14472.

What else is on the label?

Other ingredients: None.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP QUALITY ASSURED.

How many labels does Calcium Ascorbate have?

4 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 40262 Entered December 29, 2014 · off the market July 21, 2015 · 8 oz. · UPC 7 33739 00752 0
  2. Label 36334 Entered August 26, 2014 · off the market November 26, 2014 · 8 oz. · UPC 7 33739 00752 0
  3. Label 14469 Entered February 25, 2013 · off the market May 1, 2014 · 8 oz. · UPC 7 33739 00752 0
  4. Label 14472 (current) Entered October 25, 2012 · on the market · 3 lbs · UPC 7 33739 00754 4

DSLD also links this label to: Pure, Buffered Calcium Ascorbate (package size difference, same product), Pure, Buffered Calcium Ascorbate (package size difference, same product), Calcium Carbonate Pure Powder (package size difference, same product).

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?