Free Radical Quenchers

by Ecological Formulas · capsule · 60 capsules

  • On the market (NIH)
  • UPC 6 96859 13098 4
  • DSLD label 299771
  • Serving 1 capsule
  • 60 servings

Free Radical Quenchers by Ecological Formulas lists 13 ingredients, 13 with an amount per serving of 1 capsule, such as 3,000 mcg of vitamin A, 20 mg of vitamin C, 20.1 mg of vitamin E and 10 mg of zinc. Its current label entered the NIH Dietary Supplement Label Database on December 14, 2023.

What is in Free Radical Quenchers?

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).

Free Radical Quenchers: Supplement Facts rows against the market (DSLD label 299771, January 2026 release)
IngredientAmount% DVAmong products listing it
Vitamin Aas Beta-Carotene3,000 mcg333%
Vitamin Cas Ascorbyl Palmitate20 mg22%Vitamin C in Free Radical Quenchers against 18,583 products20 mg per serving; the middle half of products list 60 mg to 270 mg, the median 100 mg.DV 90 mgUL 2,000 mg20 mg

90% of 18,583 products listing vitamin C give more (median 100 mg).

Vitamin Eas Mixed Tocopherols, Tocopheryl Acetate20.1 mg134%
Zincas Zinc Picolinate10 mg91%Zinc in Free Radical Quenchers against 13,186 products10 mg per serving; the middle half of products list 5 mg to 15 mg, the median 11 mg.DV 11 mgUL 40 mg10 mg

51% of 13,186 products listing zinc give more (median 11 mg).

Seleniumas Selenium Methionate50 mcg91%Selenium in Free Radical Quenchers against 7,658 products50 mcg per serving; the middle half of products list 27 mcg to 100 mcg, the median 55 mcg.DV 55 mcgUL 400 mcg50 mcg

56% of 7,658 products listing selenium give more (median 55 mcg).

L-Cysteine Hydrochloride60 mgCysteine in Free Radical Quenchers against 516 products60 mg per serving; the middle half of products list 30 mg to 200 mg, the median 85 mg.60 mg

54% of 516 products listing cysteine give more (median 85 mg).

Glutathione60 mgGlutathione in Free Radical Quenchers against 717 products60 mg per serving; the middle half of products list 10 mg to 200 mg, the median 50 mg.60 mg

Higher than 58% of 717 products listing glutathione (median 50 mg).

L-Methionine40 mgMETHIONINE in Free Radical Quenchers against 981 products40 mg per serving; the middle half of products list 25 mg to 250 mg, the median 100 mg.40 mg

68% of 981 products listing METHIONINE give more (median 100 mg).

N-Acetyl-L-Cysteine40 mgN-Acetyl Cysteine in Free Radical Quenchers against 1,259 products40 mg per serving; the middle half of products list 55 mg to 500 mg, the median 150 mg.40 mg

87% of 1,259 products listing N-acetyl cysteine give more (median 150 mg).

N,N Dimethylglycine HCl30 mgDimethylglycine in Free Radical Quenchers against 157 products30 mg per serving; the middle half of products list 80 mg to 300 mg, the median 125 mg.30 mg

85% of 157 products listing dimethylglycine give more (median 125 mg).

Inosine5 mg
Lipoic Acid2 mgAlpha Lipoic Acid in Free Radical Quenchers against 2,407 products2 mg per serving; the middle half of products list 25 mg to 150 mg, the median 50 mg.2 mg

95% of 2,407 products listing alpha lipoic acid give more (median 50 mg).

L-Carnosine1.5 mgCarnosine in Free Radical Quenchers against 154 products1.5 mg per serving; the middle half of products list 50 mg to 500 mg, the median 100 mg.1.5 mg

over 99% of 154 products listing carnosine give more (median 100 mg).

Source: NIH ODS Dietary Supplement Label Database, label 299771 (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:

  • 90% of the 18,583 products that print an amount of vitamin C list more than its 20 mg of vitamin C (median 100 mg).
  • 95% of the 2,407 products that print an amount of alpha lipoic acid list more than its 2 mg of alpha lipoic acid (median 50 mg).
  • over 99% of the 154 products that print an amount of carnosine list more than its 1.5 mg of L-carnosine (filed by NIH under carnosine) (median 100 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 Free Radical Quenchers'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
Directions Take one capsule per day, or as directed by a physician.
Allergens and what it does not contain
This product is free of corn, soy, yeast, wheat, and other common food allergens.

Source: label statements in DSLD label 299771.

What else is on the label?

Other ingredients: Gelatin, Magnesium Stearate, Silicon Dioxide.

How many labels does Free Radical Quenchers have?

2 labels are on file under this name since July 21, 2022: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 299771 (current) Entered December 14, 2023 · on the market · 60 capsules · UPC 6 96859 13098 4
  2. Label 271286 Entered July 21, 2022 · off the market December 22, 2022 · 60 capsules · UPC 6 96859 13098 4

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

Who makes it?

The label names ECOLOGICAL FORMULAS (distributor), CONCORD, CA. All Ecological Formulas products.

Where next?