PlainVitamins

Magnesium Ascorbate 1000 mg

by Source Naturals · tablet or pill · 120 tablets

  • On the market (NIH)
  • UPC 0 21078 02399 9
  • DSLD label 274891
  • Serving 1 tablet
  • 120 servings

Magnesium Ascorbate 1000 mg by Source Naturals lists 3 ingredients, 3 with an amount per serving of 1 tablet, such as 1,000 mg of vitamin C, 69 mg of magnesium ascorbate and 100 mg of citrus bioflavonoid complex. Its current label entered the NIH Dietary Supplement Label Database on November 22, 2022.

What is in Magnesium Ascorbate 1000 mg?

Each row as the label prints it, per serving of 1 tablet. 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 Ascorbate 1000 mg: Supplement Facts rows against the market (DSLD label 274891, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Magnesium Ascorbate1,000 mg1,667%Vitamin C in Magnesium Ascorbate 1000 mg against 18,583 products1,000 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg1,000 mg

Higher than 91% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 2,000 mg.

Magnesium Ascorbate69 mg17%
Citrus Bioflavonoid Complex100 mgFlavonoid in Magnesium Ascorbate 1000 mg against 2,343 products100 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.100 mg

Higher than 62% of 2,343 products listing flavonoid (median 50 mg). Per day at the most servings: 200 mg.

Source: NIH ODS Dietary Supplement Label Database, label 274891 (entered November 22, 2022), 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 vitamin C is higher than 91% of the 18,583 vitamin C products that print an amount; 445 list more.

The NIH database records 2 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?

The products whose ingredient lists overlap most with Magnesium Ascorbate 1000 mg's, rare ingredients counting for more.

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 Use: 1 tablet twice daily.
Warnings
Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional before using this product.
Do not use if either tamper-evident seal is broken or missing.
Keep out of the reach of children.
Allergens and what it does not contain
Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 274891.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Stearic Acid, Acacia Gum, modified Cellulose Gum, Silica, Magnesium Stearate.

How many labels does Magnesium Ascorbate 1000 mg have?

2 labels are on file under this name since November 22, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 295967 Entered August 23, 2023 · off the market July 6, 2022 · 120 tablets · UPC 0 21078 02399 9
  2. Label 274891 (current) Entered November 22, 2022 · on the market · 120 tablets · UPC 0 21078 02399 9

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

Who makes it?

The label names Source Naturals, Inc. (distributor), Santa Cruz, CA. All Source Naturals products.

Where next?