PlainVitamins

Buffered C 500 mg

by Vital Nutrients · capsule · 220 vegetarian capsules

  • On the market (NIH)
  • UPC 6 93465 50111 5
  • DSLD label 304959
  • Serving 1 to 2 vegetarian capsules; amounts per 2 vegetarian capsules
  • 110 servings

Buffered C 500 mg by Vital Nutrients lists 4 ingredients, 4 with an amount per serving of 2 vegetarian capsules, such as 1,000 mg of vitamin C, 68 mg of calcium, 14 mg of magnesium and 44 mg of potassium. Its current label entered the NIH Dietary Supplement Label Database on January 24, 2024.

What is in Buffered C 500 mg?

Each row as the label prints it, per serving of 2 vegetarian capsules. 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).

Buffered C 500 mg: Supplement Facts rows against the market (DSLD label 304959, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Calcium Ascorbate, Magnesium Ascorbate, Potassium Ascorbate60% calcium ascorbate, 20% magnesium ascorbate, 20% potassium ascorbate1,000 mg1,111%Vitamin C in Buffered C 500 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: 4,000 mg. 2 times the adult UL a day.

Calciumas Calcium Ascorbate68 mg5%Calcium in Buffered C 500 mg against 17,831 products68 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg68 mg

66% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 272 mg.

Magnesiumas Magnesium Ascorbate14 mg3%Magnesium in Buffered C 500 mg against 14,003 products14 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg14 mg

89% of 14,003 products listing magnesium give more (median 86 mg). Per day at the most servings: 56 mg.

Potassiumas Potassium Ascorbate44 mg1%Potassium in Buffered C 500 mg against 11,614 products44 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg44 mg

79% of 11,614 products listing potassium give more (median 99 mg). Per day at the most servings: 176 mg.

Source: NIH ODS Dietary Supplement Label Database, label 304959 (entered January 24, 2024), 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 4 servings a day, the most its directions give, the label lists 4,000 mg of vitamin C, 2 times the adult Tolerable Upper Intake Level.

The NIH database records 2 to 4 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.

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
Recommendations 1-2 capsules, 2-4 times daily, or as directed by your healthcare professional.
Warnings
Keep out of reach of children
Use only if safety seal is intact
Warning If pregnant, consult your physician before taking.
Allergens and what it does not contain
Excludes coatings, binders, gluten (wheat, rye, barley), milk/dairy (casein, whey), soy protein, egg protein, sugar. Verified by independent testing
Storage
Store sealed in a cool dry place

Source: label statements in DSLD label 304959.

What else is on the label?

Other ingredients: Cellulose, Cellulose, Ascorbyl Palmitate, Magnesium Silicate, Silica, Leucine.

How many labels does Buffered C 500 mg have?

6 labels are on file under this name since March 23, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 304959 (current) Entered January 24, 2024 · on the market · 220 vegetarian capsules · UPC 6 93465 50111 5
  2. Label 223216 Entered June 24, 2020 · off the market December 7, 2022 · 220 vegetarian capsules · UPC 6 93465 50111 5
  3. Label 207353 Entered September 24, 2019 · off the market May 15, 2020 · 220 vegetarian capsules · UPC 6 93465 50111 5
  4. Label 182187 Entered October 25, 2018 · off the market April 5, 2019 · 220 capsules · UPC 6 93465 50111 5
  5. Label 27335 Entered November 25, 2013 · off the market April 16, 2018 · 220 capsules · UPC 6 93465 50111 5
  6. Label 6873 Entered March 23, 2012 · off the market September 13, 2013 · 220 capsules · UPC 6 93465 50111 5

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

Who makes it?

The label names Vital Nutrients (manufacturer), Middleton, CT. All Vital Nutrients products.

Where next?