L-Glutamine
by XYMOGEN · powder · 12 ounces
- On the market (NIH)
- UPC 8 71149 00334 0
- DSLD label 335491
- Serving 4 g (1 Scoop)
- 85 servings
L-Glutamine by XYMOGEN lists one ingredient: 4 g of L-glutamine per serving of 4 g. Its current label entered the NIH Dietary Supplement Label Database on September 25, 2025.
What is in L-Glutamine?
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). |
Source: NIH ODS Dietary Supplement Label Database, label 335491 (entered September 25, 2025), 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 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.
- Glutamine PeptideSNI Essential Series · off the market same ingredients
- L-Glutamine PowderDouglas Laboratories 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
- Directions: Take 1 scoop daily, mixed with 8-12 oz of water, on an empty stomach, or as directed by your healthcare professional. Consume within 30 minutes of mixing.
- Warnings
- Consult your healthcare professional prior to use. Do not use if tamper seal is damaged.
- Individuals taking medication should discuss potential interactions with their healthcare professional.
- Allergens and what it does not contain
- Formulated to exclude: Wheat, gluten, corn, yeast, soy, animal and dairy products, fish, shellfish, peanuts, tree nuts, egg, sesame, ingredients derived from genetically modified organisms (GMOs), artificial colors, and artificial sweeteners.
- Storage
- Storage: Keep closed in a cool, dry place out of reach of children.
Source: label statements in DSLD label 335491.
What else is on the label?
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): Third-party GMP compliant verified.
How many labels does L-Glutamine have?
5 labels are on file under this name since March 23, 2012: other sizes, label designs and reformulations. The current one leads this page.
- Label 335491 (current) Entered September 25, 2025 · on the market · 12 ounces · UPC 8 71149 00334 0
- Label 294747 Entered July 18, 2023 · off the market April 9, 2025 · 12 ounces · UPC 8 71149 00334 0
- Label 66148 Entered October 22, 2016 · off the market August 18, 2022 · 12 oz. · UPC 8 71149 00334 0
- Label 28036 Entered November 25, 2013 · off the market October 5, 2016 · 12 oz. · UPC 8 71149 00334 0
- Label 6606 Entered March 23, 2012 · off the market April 9, 2025 · 12 oz.
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names XYMOGEN Professional Formulas (distributor), Orlando, FL. All XYMOGEN products.