PlainVitamins

Multi-Element Buffered C

by Klaire Labs · capsule · 250 vegetarian capsules

  • Off the market since February 2025 (NIH)
  • UPC 7 09616 12125 2
  • DSLD label 322407
  • Serving 2 capsules
  • 125 servings

Multi-Element Buffered C by Klaire Labs lists 9 ingredients, 9 with an amount per serving of 2 capsules, such as 1,200 mg of vitamin C, 80 mg of calcium, 54 mg of magnesium and 6.4 mg of zinc. Its current label entered the NIH Dietary Supplement Label Database on December 21, 2024.

What is in Multi-Element Buffered C?

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

Multi-Element Buffered C: Supplement Facts rows against the market (DSLD label 322407, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Calcium L-Ascorbate, L-Ascorbic Acid, Magnesium Ascorbatepotassium l-ascorbate complex, magnesium l-ascorbate complex1,200 mg1,333%Vitamin C in Multi-Element Buffered C against 18,583 products1,200 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg1,200 mg

Higher than 98% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 2,400 mg. 1.2 times the adult UL a day.

Calciumas Calcium Carbonate, Calcium L-Ascorbate80 mg6%Calcium in Multi-Element Buffered C against 17,831 products80 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg80 mg

62% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 160 mg.

Magnesiumas Magnesium Ascorbate, Magnesium Carbonatemagnesium l-ascorbate complex54 mg13%Magnesium in Multi-Element Buffered C against 14,003 products54 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg54 mg

59% of 14,003 products listing magnesium give more (median 86 mg). Per day at the most servings: 108 mg.

Zincas Zinc Citrate6.4 mg58%Zinc in Multi-Element Buffered C against 13,186 products6.4 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg6.4 mg

69% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 12.8 mg.

Copperas Copper Bisglycinate ChelateTRAACS0.46 mg51%Copper in Multi-Element Buffered C against 6,468 products0.46 mg per serving; the middle half of products list 0.5 mg to 2 mg, the median 1 mg.DV 0.9 mgUL 10 mg0.46 mg

80% of 6,468 products listing copper give more (median 1 mg). Per day at the most servings: 0.92 mg.

Manganeseas Albion Manganese Bisglycinate ChelateTRAACS1 mg43%Manganese in Multi-Element Buffered C against 7,016 products1 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg1 mg

70% of 7,016 products listing manganese give more (median 2 mg). Per day at the most servings: 2 mg.

Potassiumas Potassium Ascorbatepotassium l-ascorbate complex20 mg1%Potassium in Multi-Element Buffered C against 11,614 products20 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg20 mg

89% of 11,614 products listing potassium give more (median 99 mg). Per day at the most servings: 40 mg.

Quercetinas Quercetin Dihydrate60 mgQuercetin in Multi-Element Buffered C against 1,548 products60 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.60 mg

55% of 1,548 products listing quercetin give more (median 100 mg). Per day at the most servings: 120 mg.

L-Glutathione, Reduced11.8 mgGlutathione in Multi-Element Buffered C against 717 products11.8 mg per serving; the middle half of products list 10 mg to 200 mg, the median 50 mg.11.8 mg

75% of 717 products listing glutathione give more (median 50 mg). Per day at the most servings: 23.6 mg.

Source: NIH ODS Dietary Supplement Label Database, label 322407 (entered December 21, 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 2 servings a day, the most its directions give, the label lists 2,400 mg of vitamin C, 1.2 times the adult Tolerable Upper Intake Level.
  • 89% of the 11,614 products that print an amount of potassium list more than its 20 mg of potassium (median 99 mg).

The NIH database records 1 to 2 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?

The products whose ingredient lists overlap most with Multi-Element Buffered C's, rare ingredients counting for more.

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: 2 capsules, 1 to 2 times daily or as directed by a healthcare professional.
Warnings
Caution: If you are pregnant, nursing, have a medical condition, or taking prescription drugs, consult your physician before using this product.
Keep out of reach of children.
Do not use if shrinkwrap is broken or missing.
Allergens and what it does not contain
Free of the following common allergens: Milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, soybeans, and yeast. Contains no artificial colors, flavors, or preservatives.
Storage
Store in a cool, dry place (59 degrees F - 85 degrees F) away from direct light.

Source: label statements in DSLD label 322407.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Water, Microcrystalline Cellulose, L-Leucine, L-Valine.

How many labels does Multi-Element Buffered C have?

6 labels are on file under this name since May 23, 2014: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 322407 (current) Entered December 21, 2024 · off the market February 18, 2025 · 250 vegetarian capsules · UPC 7 09616 12125 2
  2. Label 281133 Entered January 23, 2023 · off the market March 2, 2023 · 250 vegetarian capsules · UPC 7 09616 12125 2
  3. Label 264656 Entered June 16, 2022 · off the market February 18, 2025 · 9.17 ounces · UPC 7 09616 12026 2
  4. Label 33021 Entered May 23, 2014 · off the market March 18, 2022 · 250 vegetarian capsules · UPC 7 09616 12125 2
  5. Label 33020 Entered May 23, 2014 · off the market February 18, 2025 · 100 vegetarian capsules · UPC 7 09616 12110 8
  6. Label 32393 Entered May 23, 2014 · off the market October 8, 2021 · 8.8 oz. · UPC 7 09616 12026 2

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

Who makes it?

The label names SFI USA (manufacturer), Reno, NV. All Klaire Labs products.

Where next?