PlainVitamins

Esterol Ester-C

by Allergy Research Group · capsule · 100 vegetarian capsules

  • On the market (NIH)
  • UPC 7 13947 70070 3
  • DSLD label 304239
  • Serving 1 to 2 capsules; amounts per 2 capsules
  • 50 servings

Esterol Ester-C by Allergy Research Group lists 5 ingredients, 5 with an amount per serving of 2 capsules, such as 1.35 g of vitamin C, 150 mg of calcium, 100 mg of rutin and 50 mg of quercetin dihydrate. Its current label entered the NIH Dietary Supplement Label Database on December 14, 2023.

What is in Esterol Ester-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).

Esterol Ester-C: Supplement Facts rows against the market (DSLD label 304239, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Calcium Ascorbate1.35 g1,500%Vitamin C in Esterol Ester-C against 18,583 products1,350 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg1,350 mg

Higher than 99% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 2,700 mg. 1.4 times the adult UL a day.

Calciumas Calcium Ascorbate150 mg12%Calcium in Esterol Ester-C against 17,831 products150 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg150 mg

Higher than 58% of 17,831 products listing calcium (median 115 mg). Per day at the most servings: 300 mg.

Rutin100 mgRutin in Esterol Ester-C against 1,232 products100 mg per serving; the middle half of products list 10 mg to 50 mg, the median 25 mg.100 mg

Higher than 84% of 1,232 products listing rutin (median 25 mg). Per day at the most servings: 200 mg.

Quercetin Dihydrate50 mgQuercetin in Esterol Ester-C against 1,548 products50 mg per serving; the middle half of products list 26.5 mg to 250 mg, the median 100 mg.50 mg

56% of 1,548 products listing quercetin give more (median 100 mg). Per day at the most servings: 100 mg.

Grape Seed Extractas Proanthocyanidins92% proanthocyanidins5 mgGrape in Esterol Ester-C against 1,900 products5 mg per serving; the middle half of products list 25 mg to 100 mg, the median 50 mg.5 mg

93% of 1,900 products listing grape give more (median 50 mg). Per day at the most servings: 10 mg.

Source: NIH ODS Dietary Supplement Label Database, label 304239 (entered December 14, 2023), 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 2,700 mg of vitamin C, 1.4 times the adult Tolerable Upper Intake Level.
  • 93% of the 1,900 products that print an amount of grape list more than its 5 mg of grape (median 50 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?

2 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
Suggested use As a dietary supplement, 1 or 2 capsules one or two times daily between meals, or as directed by a healthcare practitioner.
Storage
Keep in a cool, dry place, tightly capped.

Source: label statements in DSLD label 304239.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Magnesium Stearate, Silicon Dioxide.

How many labels does Esterol Ester-C have?

5 labels are on file under this name since January 7, 2019: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 304239 (current) Entered December 14, 2023 · on the market · 100 vegetarian capsules · UPC 7 13947 70070 3
  2. Label 233054 Entered August 23, 2020 · on the market · 200 vegetarian capsules · UPC 7 13947 70080 2
  3. Label 233053 Entered August 23, 2020 · on the market · 100 vegetarian capsules · UPC 7 13947 70070 3
  4. Label 207877 Entered November 21, 2019 · off the market August 4, 2020 · 100 vegetarian capsules · UPC 7 13947 70070 3
  5. Label 182900 Entered January 7, 2019 · off the market August 4, 2020 · 200 vegetarian capsules · UPC 7 13947 70080 2

DSLD also links this label to: Esterol (image difference, same product), Esterol (image difference, same product), Esterol (image difference, same product).

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

Who makes it?

The label names Allergy Research Group (distributor), South Salt Lake, UT. All Allergy Research Group products.

Where next?