L-Glutathione 50 mg

by Douglas Laboratories · capsule · 100 capsules

  • On the market (NIH)
  • UPC 3 10539 01849 1
  • DSLD label 9291
  • Serving 1 capsule
  • 100 servings

L-Glutathione 50 mg by Douglas Laboratories lists one ingredient: 50 mg of L-glutathione per serving of 1 capsule. Its current label entered the NIH Dietary Supplement Label Database on June 1, 2012.

What is in L-Glutathione 50 mg?

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).

L-Glutathione 50 mg: Supplement Facts rows against the market (DSLD label 9291, January 2026 release)
IngredientAmount% DVAmong products listing it
L-Glutathione50 mgGlutathione in L-Glutathione 50 mg against 717 products50 mg per serving; the middle half of products list 10 mg to 200 mg, the median 50 mg.50 mg

42% of 717 products listing glutathione give more (median 50 mg).

Source: NIH ODS Dietary Supplement Label Database, label 9291 (entered June 1, 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?

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 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?

6 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 Usage: As a dietary supplement, adults take 1 capsule daily or as directed by physician.
Warnings
KEEP OUT OF REACH OF CHILDREN.
Tamper resistant package, do not use if outer seal is missing.
Allergens and what it does not contain
This product contains NO yeast, wheat gluten, soy protein, milk/dairy, corn, sodium, sugar, starch, artificial coloring, preservatives or flavoring.
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 9291.

What else is on the label?

Other ingredients: Cellulose, Gelatin, Vegetable Stearate.

How many labels does L-Glutathione 50 mg have?

3 labels are on file under this name since February 23, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 9291 (current) Entered June 1, 2012 · on the market · 100 capsules · UPC 3 10539 01849 1
  2. Label 9290 Entered June 1, 2012 · on the market · 60 capsules · UPC 3 10539 67949 4
  3. Label 5356 Entered February 23, 2012 · off the market January 20, 2012 · 60 capsules · UPC 3 10539 67949 4

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?