PlainVitamins

C-Plex Powder

by Douglas Laboratories · powder · 240 g

  • On the market (NIH)
  • UPC 7 45287 02024 1
  • DSLD label 10808
  • Serving 10 g (1 tablespoon)
  • 24 servings

C-Plex Powder by Douglas Laboratories lists 9 ingredients, 9 with an amount per serving of 10 g, such as 1,500 mg of vitamin C, 100 mg of calcium, 100 mg of magnesium and 3 mg of zinc, beside 2 Nutrition Facts rows (calories, fat and the like). Its current label entered the NIH Dietary Supplement Label Database on August 24, 2012.

What is in C-Plex Powder?

Each row as the label prints it, per serving of 10 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).

C-Plex Powder: Supplement Facts rows against the market (DSLD label 10808, January 2026 release)
IngredientAmount% DVAmong products listing it
Calories28 Calories
Total Carbohydrates7 g2%Carbohydrate in C-Plex Powder against 21,979 products7 g per serving; the middle half of products list 1 g to 6 g, the median 3 g.7 g

Higher than 79% of 21,979 products listing carbohydrate (median 3 g). Per day at the most servings: 14 g.

Sugar7 gSugar in C-Plex Powder against 11,807 products7 g per serving; the middle half of products list 1 g to 4 g, the median 2 g.7 g

Higher than 88% of 11,807 products listing sugar (median 2 g). Per day at the most servings: 14 g.

Vitamin Cas Calcium Ascorbate, Chromium Ascorbate, Magnesium AscorbateVitamin C (Form: as calcium ascorbate, magnesium ascorbate, potassium ascorbate, chromium ascorbate, zinc ascorbate, and manganese ascorbate)1,500 mg2,500%Vitamin C in C-Plex Powder against 18,583 products1,500 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg1,500 mg

Higher than 99% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 3,000 mg. 1.5 times the adult UL a day.

Calciumas Calcium AscorbateCalcium (Form: as Calcium Ascorbate)100 mg10%Calcium in C-Plex Powder against 17,831 products100 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg100 mg

53% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 200 mg.

Magnesiumas Magnesium AscorbateMagnesium (Form: as Magnesium Ascorbate)100 mg25%Magnesium in C-Plex Powder against 14,003 products100 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg100 mg

Higher than 51% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 200 mg.

Zincas Zinc AscorbateZinc (Form: as Zinc Ascorbate)3 mg20%Zinc in C-Plex Powder against 13,186 products3 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg3 mg

84% of 13,186 products listing zinc give more (median 11 mg). Per day at the most servings: 6 mg.

Seleniumas selenium methionateSelenium (Form: as selenium methionate)20 mcg29%Selenium in C-Plex Powder against 7,658 products20 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg20 mcg

84% of 7,658 products listing selenium give more (median 55 mcg). Per day at the most servings: 40 mcg.

Manganeseas Manganese AscorbateManganese (Form: as Manganese Ascorbate)3 mg150%Manganese in C-Plex Powder against 7,016 products3 mg per serving; the middle half of products list 1 mg to 3.92 mg, the median 2 mg.DV 2.3 mgUL 11 mg3 mg

Higher than 71% of 7,016 products listing manganese (median 2 mg). Per day at the most servings: 6 mg.

Chromiumas Chromium AscorbateChromium (Form: as Chromium Ascorbate)25 mcg21%Chromium in C-Plex Powder against 7,825 products25 mcg per serving; the middle half of products list 45 mcg to 200 mcg, the median 100 mcg.DV 35 mcg25 mcg

83% of 7,825 products listing chromium give more (median 100 mcg). Per day at the most servings: 50 mcg.

Potassiumas Potassium AscorbatePotassium (Form: as Potassium Ascorbate)30 mg1%Potassium in C-Plex Powder against 11,614 products30 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg30 mg

83% of 11,614 products listing potassium give more (median 99 mg). Per day at the most servings: 60 mg.

Citrus Bioflavonoids250 mgFlavonoid in C-Plex Powder against 2,343 products250 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.250 mg

Higher than 88% of 2,343 products listing flavonoid (median 50 mg). Per day at the most servings: 500 mg.

Source: NIH ODS Dietary Supplement Label Database, label 10808 (entered August 24, 2012), version 9.4.0. See the label on DSLD. 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 3,000 mg of vitamin C, 1.5 times the adult Tolerable Upper Intake Level.

The NIH database records 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 C-Plex Powder'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 Usage: Adults take 1 tablespoon twice daily. Stir briskly in 6 or more ounces of water or other suitable liquid, then drink immediately.
Warnings
KEEP OUT OF REACH OF CHILDREN.
Tamper resistant package, do not use if outer seal is missing.
Storage
For optimal storage conditions, store in a cool, dry place. (59(0)-77(0)F/15(0)-25(0)C) (35-65% relative humidity)

Source: label statements in DSLD label 10808.

What else is on the label?

Other ingredients: Fructose, natural Orange flavor, Citric Acid, Carrageenan, Silica.

How many labels does C-Plex Powder have?

2 labels are on file under this name since July 25, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 10808 (current) Entered August 24, 2012 · on the market · 240 g · UPC 7 45287 02024 1
  2. Label 10809 Entered July 25, 2012 · off the market January 20, 2012 · 240 g · UPC 7 45287 02024 1

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

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?