PlainVitamins

Ester-C Plus

by Douglas Laboratories · capsule · 100 capsules

  • On the market (NIH)
  • UPC 3 10539 71847 6
  • DSLD label 232465
  • Serving 1 capsule
  • 100 servings

Ester-C Plus by Douglas Laboratories lists 8 ingredients, 5 with an amount per serving of 1 capsule, such as 530 mg of vitamin C, 60 mg of calcium, 50 mg of rutin and 50 mg of citrus bioflavonoids; 3 sit inside a blend without their own amounts. Its current label entered the NIH Dietary Supplement Label Database on August 23, 2020.

What is in Ester-C Plus?

Each row as the label prints it, per serving of 1 capsule. 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).

Ester-C Plus: Supplement Facts rows against the market (DSLD label 232465, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ester-CVitamin C (Form: as Ester-C)530 mg589%Vitamin C in Ester-C Plus against 18,583 products530 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg530 mg

Higher than 89% of 18,583 products listing vitamin C (median 100 mg).

Calciumas Ester-CCalcium (Form: as Ester-C)60 mg5%Calcium in Ester-C Plus against 17,831 products60 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg60 mg

68% of 17,831 products listing calcium give more (median 115 mg).

Rutin50 mgRutin in Ester-C Plus against 1,232 products50 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.50 mg

Higher than 69% of 1,232 products listing rutin (median 25 mg).

Citrus Bioflavonoids50 mgFlavonoid in Ester-C Plus against 2,343 products50 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.50 mg

46% of 2,343 products listing flavonoid give more (median 50 mg).

Proprietary Blend6 mg
Quercetinas Quercetin DihydrateQuercetin (Form: as Quercetin Dihydrate)in the blend, no amount given
Echinaceain the blend, no amount given
Beta-Carotenein the blend, no amount given
Pycnogenol3 mgPine in Ester-C Plus against 220 products3 mg per serving; the middle half of products list 25 mg to 180 mg, the median 83 mg.3 mg

96% of 220 products listing pine give more (median 83 mg).

Source: NIH ODS Dietary Supplement Label Database, label 232465 (entered August 23, 2020), 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:

  • 96% of the 220 products that print an amount of pine list more than its 3 mg of pycnogenol (filed by NIH under pine) (median 83 mg).

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?

The products whose ingredient lists overlap most with Ester-C Plus'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: As a dietary supplement, adults take 1 capsule daily or as directed by your health professional.
Warnings
Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.
Keep out of the reach of children.
Use only if safety seal is intact.
Allergens and what it does not contain
Gluten-free, Non-GMO
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 232465.

What else is on the label?

Other ingredients: Gelatin, Microcrystalline Cellulose, Vegetable Stearate.

How many labels does Ester-C Plus have?

7 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 232465 (current) Entered August 23, 2020 · on the market · 100 capsules · UPC 3 10539 71847 6
  2. Label 56025 Entered January 25, 2016 · off the market June 5, 2020 · 100 capsules · UPC 3 10539 71847 6
  3. Label 26921 Entered October 25, 2013 · on the market · 250 capsules · UPC 3 10539 01911 5
  4. Label 26918 Entered October 25, 2013 · off the market December 15, 2015 · 100 capsules · UPC 3 10539 71847 6
  5. Label 9064 Entered June 1, 2012 · off the market August 27, 2013 · 250 capsules · UPC 3 10539 01911 5
  6. Label 9063 Entered June 1, 2012 · off the market August 27, 2013 · 100 capsules · UPC 3 10539 71847 6
  7. Label 6657 Entered March 23, 2012 · off the market January 20, 2012 · 100 capsules · UPC 3 10539 71847 6

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?