PlainVitamins

Buffered C Crystals

by Bluebonnet · other (e.g. tea bag) · 4.4 ounces

  • On the market (NIH)
  • UPC 7 43715 00544 0
  • DSLD label 332419
  • Serving 5 g (1 Teaspoon)
  • 25 servings

Buffered C Crystals by Bluebonnet lists 2 ingredients, 2 with an amount per serving of 5 g, such as 4,100 mg of vitamin C and 375 mg of calcium. Its current label entered the NIH Dietary Supplement Label Database on July 24, 2025.

What is in Buffered C Crystals?

Each row as the label prints it, per serving of 5 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).

Buffered C Crystals: Supplement Facts rows against the market (DSLD label 332419, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Calcium Ascorbate4,100 mg4,556%

This amount is far outside what other labels list for vitamin C, or disagrees with the label's own %DV: possibly a unit or transcription slip in the database. Check the label image on DSLD.

Calciumas Calcium Ascorbate375 mg29%Calcium in Buffered C Crystals against 17,831 products375 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg375 mg

Higher than 82% of 17,831 products listing calcium (median 115 mg).

Source: NIH ODS Dietary Supplement Label Database, label 332419 (entered July 24, 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?

Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient.

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.

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
Directions: As a dietary supplement, take one teaspoon (5 g) daily in juice or water, or as directed by a healthcare practitioner.
Warnings
Caution: For adults only. Keep out of reach of children.
Consult physician if pregnant/nursing, taking medication, or have a medical condition.
Allergens and what it does not contain
Bluebonnet's Buffered C Crystals are formulated with non-GMO, identity-preserved (IP) vitamin C from calcium ascorbate to help support immune health. Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans and sesame. Also free of gluten, barley, rice, sodium and sugar.
Made with NON GMO Ingredients Gluten free
Storage
Store tightly closed in a cool, dry place.

Source: label statements in DSLD label 332419.

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): K Parve (Kosher) Vegan.

How many labels does Buffered C Crystals have?

6 labels are on file under this name since June 25, 2018: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 332419 (current) Entered July 24, 2025 · on the market · 4.4 ounces · UPC 7 43715 00544 0
  2. Label 332420 Entered June 25, 2025 · on the market · 8.8 ounces · UPC 7 43715 00546 4
  3. Label 279647 Entered January 23, 2023 · off the market June 30, 2025 · 8.8 ounces · UPC 7 43715 00546 4
  4. Label 279646 Entered January 23, 2023 · off the market June 30, 2025 · 4.4 ounces · UPC 7 43715 00544 0
  5. Label 178137 Entered June 25, 2018 · off the market June 30, 2025 · 8.8 oz. · UPC 7 43715 00546 4
  6. Label 178135 Entered June 25, 2018 · off the market June 30, 2025 · 4.4 oz. · UPC 7 43715 00544 0

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

Who makes it?

The label names Bluebonnet Nutrition Corporation (manufacturer), Sugar Land, Texas. All Bluebonnet products.

Where next?