Buffered Magnesium Ascorbate Vitamin C Powder
by Swanson Premium Brand · powder · 4 ozs
- Off the market since November 2023 (NIH)
- UPC 0 87614 11573 3
- DSLD label 204058
- Serving 1 g (1 scoop)
- 113 servings
Buffered Magnesium Ascorbate Vitamin C Powder by Swanson Premium Brand lists 2 ingredients, 2 with an amount per serving of 1 g, such as 830 mg of vitamin C and 65 mg of magnesium. Its current label entered the NIH Dietary Supplement Label Database on June 24, 2019.
What is in Buffered Magnesium Ascorbate Vitamin C Powder?
Each row as the label prints it, per serving of 1 g. 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Vitamin Cas Magnesium AscorbateVitamin C (Form: as Magnesium Ascorbate) | 830 mg | 922% | Higher than 91% of 18,583 products listing vitamin C (median 100 mg). |
| Magnesiumas Magnesium AscorbateMagnesium (Form: from Magnesium Ascorbate) | 65 mg | 15% | 55% of 14,003 products listing magnesium give more (median 86 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 204058 (entered June 24, 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:
- Its 830 mg of vitamin C is higher than 91% of the 18,583 vitamin C products that print an amount; 1,757 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.
- Magnesium AscorbateNOW · off the market same ingredients
- Pure, Buffered Magnesium AscorbateNOW · off the market same ingredients
- Buffered Magnesium AscorbateNOW same ingredients
- Vitamin C Powder (Magnesium Ascorbate)Pharmax same ingredients
- Vitamin C PowderPharmax same ingredients
- Magnesium AscorbateSource Naturals same ingredients
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: As a dietary supplement, mix one scoop (1 g) one time per day with water or juice as desired. Scoop included.
- Warnings
- Note: Product contains a desiccant packet to maintain freshness. Do not eat the desiccant packet.
- Storage
- Store in a cool, dry location.
Source: label statements in DSLD label 204058.
What else is on the label?
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): V Vegetarian formula.
How many labels does Buffered Magnesium Ascorbate Vitamin C Powder have?
2 labels are on file under this name since April 25, 2018: other sizes, label designs and reformulations. The current one leads this page.
- Label 204058 (current) Entered June 24, 2019 · off the market November 28, 2023 · 4 ozs · UPC 0 87614 11573 3
- Label 175337 Entered April 25, 2018 · off the market July 24, 2018 · 4 ozs · UPC 0 87614 11573 3
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Swanson Health Products (distributor), Fargo, ND. All Swanson Premium Brand products.