PlainVitamins

100% Pure Buffered Sodium Ascorbate

by NOW · powder · 8 oz.

  • Off the market since May 2014 (NIH)
  • UPC 7 33739 00760 5
  • DSLD label 27955
  • Serving 0.5 tsp (1.9 g)
  • 119 servings

100% Pure Buffered Sodium Ascorbate by NOW lists one ingredient: 1.67 g of vitamin C per serving of 0.5 tsp. Its current label entered the NIH Dietary Supplement Label Database on November 25, 2013.

What is in 100% Pure Buffered Sodium Ascorbate?

Each row as the label prints it, per serving of 0.5 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).

100% Pure Buffered Sodium Ascorbate: Supplement Facts rows against the market (DSLD label 27955, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Sodium AscorbateVitamin C (Form: from Sodium Ascorbate) Note: 1,670 mg1.67 g2,783%Vitamin C in 100% Pure Buffered Sodium Ascorbate against 18,583 products1,670 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg1,670 mg

Higher than over 99% of 18,583 products listing vitamin C (median 100 mg).

Sodiumas Sodium AscorbateSodium (Form: from Sodium Ascorbate)210 mg9%Sodium in 100% Pure Buffered Sodium Ascorbate against 14,514 products210 mg per serving; the middle half of products list 15 mg to 142 mg, the median 55 mg.210 mg

Higher than 84% of 14,514 products listing sodium (median 55 mg).

Source: NIH ODS Dietary Supplement Label Database, label 27955 (entered November 25, 2013), 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:

  • Its 1,670 mg of vitamin C is higher than over 99% of the 18,583 vitamin C products that print an amount; 157 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: As a dietary supplement, take 1/2 level teaspoon daily. Consider taking these other NOW(R) products: Citrus Bioflavonoids and Alpha Lipoic Acid.
Consult physician if pregnant/nursing, taking medication, or have a medical condition.
Warnings
Caution: For adults only.
Keep out of reach of children.
Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut 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 tree nut ingredients.
Storage
Store in a cool, dry place after opening.

Source: label statements in DSLD label 27955.

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 100% Pure Buffered Sodium Ascorbate have?

3 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 27955 (current) Entered November 25, 2013 · off the market May 1, 2014 · 8 oz. · UPC 7 33739 00760 5
  2. Label 14477 Entered October 25, 2012 · off the market August 24, 2015 · 3 lbs · UPC 7 33739 00762 9
  3. Label 14475 Entered October 25, 2012 · off the market February 13, 2013 · 8 oz. · UPC 7 33739 00760 5

DSLD also links this label to: Pure, Buffered Sodium Ascorbate (image difference, same product), Pure, Buffered Sodium Ascorbate (package size difference, same product), Pure, Buffered Sodium Ascorbate (image difference, same product), Pure, Buffered Sodium Ascorbate (package size difference, same product), Pure, Buffered Sodium Ascorbate (image difference, same product), Pure, Buffered Sodium Ascorbate (package size difference, same product), Pure Buffered Sodium Ascorbate (package size difference, same product), Pure, Buffered Sodium Ascorbate (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 (distributor), Bloomingdale, IL. All NOW products.

Where next?