L-Glutamine Powder
by Douglas Laboratories · powder · 266.6 grams
- On the market (NIH)
- UPC 3 10539 00472 2
- DSLD label 317995
- Serving 4.3 g (1 heaping teaspoon); amounts per 4 g
- 62 servings
L-Glutamine Powder by Douglas Laboratories lists one ingredient: 4 g of L-glutamine per serving of 4 g. Its current label entered the NIH Dietary Supplement Label Database on October 24, 2024.
What is in L-Glutamine Powder?
Each row as the label prints it, per serving of 4 g. 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).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| L-Glutamine | 4 g | Higher than 79% of 1,850 products listing glutamine (median 1 g). Per day at the most servings: 8 g. |
Source: NIH ODS Dietary Supplement Label Database, label 317995 (entered October 24, 2024), 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 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?
6 products list the very same ingredients; the nearest amounts come first.
- Glutamine PeptideSNI Essential Series · off the market same ingredients
- L-GlutamineXYMOGEN same ingredients
- Pure L-Glutamine Powder Free FormVitamin World same ingredients
- 100% Pure Glutamine Powder 4,500 mgBody Fortress · off the market same ingredients
- L-Glutamine PowderMartin Avenue Pharmacy same ingredients
- L-Glutamine Powder 4500 mgThe Vitamin Shoppe · off the market same ingredients
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 mix one heaping teaspoon in water or juice, twice 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.
- Packaged by weight, not volume. Settling may occur.
Source: label statements in DSLD label 317995.
How many labels does L-Glutamine Powder have?
5 labels are on file under this name since February 23, 2012: other sizes, label designs and reformulations. The current one leads this page.
- Label 317995 (current) Entered October 24, 2024 · on the market · 266.6 grams · UPC 3 10539 00472 2
- Label 232005 Entered August 23, 2020 · off the market January 31, 2024 · 250 grams · UPC 3 10539 00472 2
- Label 56105 Entered January 25, 2016 · off the market July 10, 2020 · 250 grams · UPC 3 10539 00472 2
- Label 10741 Entered July 25, 2012 · on the market · 500 g · UPC 3 10539 01174 4
- Label 5322 Entered February 23, 2012 · off the market December 15, 2015 · 250 g · UPC 3 10539 00472 2
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 (distributor), Sudbury, MA. All Douglas Laboratories products.