Buffered Vitamin C Powder Unflavored
by Kirkman · powder · 7 ounces
- On the market (NIH)
- UPC 8 12325 02171 0
- DSLD label 333037
- Serving 1.25 g (1/4 Teaspoon)
- 158 servings
Buffered Vitamin C Powder Unflavored by Kirkman lists one ingredient: 1,100 mg of vitamin C per serving of 1.25 g. Its current label entered the NIH Dietary Supplement Label Database on May 21, 2025.
What is in Buffered Vitamin C Powder Unflavored?
Each row as the label prints it, per serving of 1.25 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 |
|---|---|---|---|
| Sodiumas Sodium Ascorbate | 75 mg | 3% | Higher than 57% of 14,514 products listing sodium (median 55 mg). Per day at the most servings: 225 mg. |
| Vitamin Cas Ascorbic Acid, Magnesium Ascorbate, Potassium Ascorbate | 1,100 mg | 1,222% | Higher than 98% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 3,300 mg. 1.6 times the adult UL a day. |
Source: NIH ODS Dietary Supplement Label Database, label 333037 (entered May 21, 2025), 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:
- At 3 servings a day, the most its directions give, the label lists 3,300 mg of vitamin C, 1.6 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.
- Buffered Vitamin C Powder Passionfruit FlavoredKirkman · off the market same ingredients
- Buffered Vitamin C Powder Passionfruit FlavorKirkman same ingredients
- Liposomal Liquid Vitamin C 1000 mgCalifornia Gold Nutrition same ingredients
- Vitamin C As Sodium Ascorbate And Ascorbic Acid Soluble Fine CrystalsBronson Laboratories · off the market same ingredients
- Liposomal Vitamin C PureNanoNutra same ingredients
- Sodium AscorbateNutriBiotic Immunity 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: Take 1/4 teaspoon, dissolved in water or juice 1-3 times daily, or as directed by a physician.
- Warnings
- Keep out of the reach of children. Caution: Formulated for adults and children four years and older. For children under four, consult a physician.
- Allergens and what it does not contain
- Free of: Milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soy, and sesame
- These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
- Ultra Tested Gluten free
- Storage
- Important: Store in a cool dry place and tightly capped.
Source: label statements in DSLD label 333037.
What else is on the label?
Other ingredients: Xylitol, Silicon Dioxide.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Ultra tested cGMP.
How many labels does Buffered Vitamin C Powder Unflavored have?
2 labels are on file under this name since September 25, 2024: other sizes, label designs and reformulations. The current one leads this page.
- Label 333037 (current) Entered May 21, 2025 · on the market · 7 ounces · UPC 8 12325 02171 0
- Label 317694 Entered September 25, 2024 · off the market October 30, 2024 · 7 ounces · UPC 8 12325 02171 0
DSLD also links this label to: Buffered Vitamin C - Unflavored Powder (image 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 Kirkman (manufacturer), Lake Oswego, OR. All Kirkman products.