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Kirkman · Vitamin supplement

Buffered Vitamin C - Unflavored Powder

7 ingredients on file in the NIH Dietary Supplement Label Database, top 58% by ingredient count. Off-market, label data preserved for reference.

7
Ingredients
Top 58%
By ingredient count
3
Nutrient categories

Buffered Vitamin C - Unflavored Powder is a vitamin supplement by Kirkman in powder form, listing 7 ingredients in the NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. Currently listed as off-market (no longer available for purchase, but label data is preserved). Daily Value percentages shown below are based on FDA reference daily intake amounts for adults.

Product Details

Form
Powder
Database Entry Date
2013-10-25
Ingredients
7

Supplement Facts (7 Ingredients)

Vitamin C
Amount
Not disclosed on label
% DV
Not reported
Sodium Ascorbate
Amount
Not disclosed on label
% DV
Not reported
Ascorbic Acid
Amount
Not disclosed on label
% DV
Not reported
Xylitol
Amount
Not disclosed on label
% DV
Not reported
Silicon Dioxide
Amount
Not disclosed on label
% DV
Not reported
Magnesium Ascorbate
Amount
Not disclosed on label
% DV
Not reported
Potassium Ascorbate
Amount
Not disclosed on label
% DV
Not reported

How does Buffered Vitamin C - Unflavored Powder compare?

Ingredients listed on each label, against the vitamin category average of 6.8. Data from the NIH DSLD.

Buffered Vitamin C - Unflavored Powder7
100% Natural E Liquid2
Vitamin average6.8

Buffered Vitamin C - Unflavored Powder lists 5 ingredients more than 100% Natural E Liquid.

What the Label Data Shows

According to NIH DSLD label rows, Buffered Vitamin C - Unflavored Powder sits in the top 58% of products with a countable formula by declared ingredient count.

Buffered Vitamin C - Unflavored Powder is cataloged in the NIH Dietary Supplement Label Database (DSLD) as a vitamin supplement built from 7 ingredients from Kirkman, sold in powder form. These ingredients span 3 nutrient categories, vitamin, non-nutrient/non-botanical, mineral, reflecting a multi-component formula rather than a single-nutrient product.

Across a broader 7-ingredient formula, 7 of 7 lack a percentage Daily Value in the available source record, leaving their regulatory reference status unspecified on this page.

A product's market status is worth checking before relying on this label. This product is currently listed as off-market in the DSLD, with its label first entered into the database on 2013-10-25. Once a product goes off-market, it is no longer manufactured or sold under this label, yet the DSLD keeps the record intact for historical reference, useful for researchers, anyone with an older bottle on hand, or tracking how formulations changed over time.

About the DSLD database

The DSLD is a label database, not an FDA approval list, under the 1994 DSHEA framework, dietary supplements do not require pre-market approval, and label information reflects what manufacturers self-declare rather than independent laboratory verification. This page presents factual label data for reference only and is not medical advice; consult a licensed healthcare provider before making decisions about any supplement.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD) Supplement label data for Buffered Vitamin C - Unflavored Powder: ingredients, % Daily Value, market status, brand · 2026 DSLD captures manufacturer-self-declared label information; the NIH does not verify accuracy or evaluate safety/efficacy. Dietary supplements are regulated under DSHEA 1994, no pre-market FDA approval is required.

Nationwide supplements with similar label profiles

Two DSLD-derived peer sets for Buffered Vitamin C - Unflavored Powder, both outside the Kirkman brand so the neighborhoods are not catalog containment (the same-type Nearby block above stays type-local).

Ingredient Breakdown by Category

vitamin
4
Vitamin C, Ascorbic Acid, Magnesium Ascorbate, +1 more
non-nutrient/non-botanical
2
Sodium Ascorbate, Xylitol
mineral
1
Silicon Dioxide

Daily Value Coverage

0
Above 100% DV
0
Below 100% DV
7
%DV not reported in source

Frequently Asked Questions

What ingredients are in Buffered Vitamin C - Unflavored Powder?
Buffered Vitamin C - Unflavored Powder contains 7 ingredients. By declared ingredient count it sits in the top 58% of DSLD products PlainVitamins places. Ingredients span 3 categories: vitamin, non-nutrient/non-botanical, mineral.
Who manufactures Buffered Vitamin C - Unflavored Powder?
Buffered Vitamin C - Unflavored Powder is was manufactured by Kirkman. It is classified as a Vitamin supplement in powder form.
Is Buffered Vitamin C - Unflavored Powder still available for purchase?
According to the NIH DSLD database, Buffered Vitamin C - Unflavored Powder is listed as off-market and may no longer be available for purchase.
What is the serving size of Buffered Vitamin C - Unflavored Powder?
The serving size is not specified.
What type of supplement is Buffered Vitamin C - Unflavored Powder?
Buffered Vitamin C - Unflavored Powder is classified as a "Vitamin" supplement in the NIH database. This category includes products primarily composed of vitamin ingredients. Across the full DSLD catalog, products fall into 9 possible categories: Vitamin, Mineral, Botanical, Amino Acid & Protein, Non-Nutrient, Fat & Fatty Acid, Multi-Vitamin & Mineral, Botanical with Nutrients, and Other Combinations.
Data Sources & Methodology

Data as of 2025. Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD).

Supplement label data sourced from the Source: NIH Dietary Supplement Label Database (DSLD), maintained by the Office of Dietary Supplements at the National Institutes of Health. The DSLD contains label information from dietary supplement products marketed in the United States.

Daily Value (DV) percentages are based on Source: FDA 21 CFR 101.9 Reference Daily Intake (RDI) values for adults. Products marked "Off Market" may no longer be available for purchase but their label data remains in the database for reference.

Disclaimer, Not Medical Advice

Label data from the Source: NIH Dietary Supplement Label Database (DSLD). This information is for educational and reference purposes only and does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider before starting, stopping, or combining any dietary supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. This page draws directly on the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.