PlainVitamins

Ester-C & Flavonoids

by Pure Encapsulations · capsule · 90 capsules

  • On the market (NIH)
  • UPC 7 66298 01668 9
  • DSLD label 293961
  • Serving 1 capsule
  • 90 servings

Ester-C & Flavonoids by Pure Encapsulations lists 5 ingredients, 5 with an amount per serving of 1 capsule, such as 619 mg of vitamin C, 68 mg of calcium, 7 mg of threonic acid and 50 mg of quercetin. Its current label entered the NIH Dietary Supplement Label Database on July 18, 2023.

What is in Ester-C & Flavonoids?

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 & Flavonoids: Supplement Facts rows against the market (DSLD label 293961, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Cas Ester-C619 mg688%Vitamin C in Ester-C & Flavonoids against 18,583 products619 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg619 mg

Higher than 90% of 18,583 products listing vitamin C (median 100 mg). Per day at the most servings: 1,238 mg.

Calciumas Ester-C68 mg5%Calcium in Ester-C & Flavonoids against 17,831 products68 mg per serving; the middle half of products list 50 mg to 252 mg, the median 115 mg.DV 1,300 mgUL 2,500 mg68 mg

66% of 17,831 products listing calcium give more (median 115 mg). Per day at the most servings: 136 mg.

Threonic Acidas Ester-C7 mg
Quercetin50 mgQuercetin in Ester-C & Flavonoids 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.

Rutin100 mgRutin in Ester-C & Flavonoids 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.

Source: NIH ODS Dietary Supplement Label Database, label 293961 (entered July 18, 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?

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 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 Ester-C & Flavonoids'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
Recommendations: As a dietary supplement, take 1 capsule, 1-2 times daily, with or between meals.
Warnings
Warning: if you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.
Keep out of reach of children.
Use only if safety seal is intact.
Allergens and what it does not contain
Gluten-free, non-GMO & hypoallergenic
Certified Gluten-Free by the Gluten-free Certification Organization www.gluten.org
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 293961.

What else is on the label?

Other ingredients: Cellulose, Water, Ascorbyl Palmitate.

Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GFCO.org (Gluten-Free Certification Organization). Listed with: Certified gluten-free (GFCO) (a seal is the label's claim; the certifier's own list confirms it).

How many labels does Ester-C & Flavonoids have?

7 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 293961 (current) Entered July 18, 2023 · on the market · 90 capsules · UPC 7 66298 01668 9
  2. Label 287414 Entered June 22, 2023 · on the market · 180 capsules · UPC 7 66298 01778 5
  3. Label 287403 Entered June 22, 2023 · on the market · 30 capsules · UPC 7 66298 02391 5
  4. Label 218794 Entered April 23, 2020 · off the market December 4, 2018 · 90 capsules · UPC 7 66298 01668 9
  5. Label 184788 Entered January 7, 2019 · off the market December 16, 2020 · 90 capsules · UPC 7 66298 01668 9
  6. Label 184405 Entered January 7, 2019 · off the market August 17, 2020 · 180 capsules · UPC 7 66298 01778 5
  7. Label 184256 Entered January 7, 2019 · off the market January 23, 2018 · 180 capsules · UPC 7 66298 01778 5

DSLD also links this label to: Essential-C & Flavonoids (image difference, same product), Essential-C & Flavonoids (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 Pure Encapsulations (manufacturer), Sudbury, MA. All Pure Encapsulations products.

Where next?