PlainVitamins

amino acid

Glutamine supplements

Half of the 1,850 glutamine supplements in the NIH label database that print an amount list 1 g or less per serving; the middle half list 0.356 g to 3 g (DSLD version 9.4.0, January 2026). The 330 products whose only supplement ingredient is glutamine list a median of 4 g.

Products listing it
2,9731,850 print an amount; 1,122 list it inside a blend without an amount
Median per serving
1 gmiddle half 0.356 g to 3 g

How much glutamine do supplements contain?

The median product lists 1 g per serving. One in ten lists 0.1 g or less, one in ten 5 g or more. The amount printed most often is 5 g (241 products).

Products by amount of glutamine per serving

1,850 products, log scale; extreme 0.2% at each end left out of the drawing.

Glutamine: products by amount per serving0.003 g0.03 g0.3 g3 g
Glutamine: products by amount per serving0.003 g0.03 g0.3 g1 g3 g10 g
Glutamine: products by amount per serving0.003 g0.03 g0.1 g0.3 g1 g3 g10 g
Glutamine: products by amount per serving0.003 g0.01 g0.03 g0.1 g0.3 g1 g3 g10 g30 g
Glutamine: products by amount per serving0.003 g0.01 g0.03 g0.1 g0.3 g1 g3 g10 g30 g
The amounts printed most often
Amount per servingProductsFor example
5 g241 Glutamine (Tapout Sports Nutrition); L-Glutamine Powder (GNC Pro Performance); RapidDrive Glutamine 5000 Fruit Punch (GNC Pro Performance)
1 g192 Recover Post Workout (Tapout Sports Nutrition); L-Glutamine (GNC Mega Men); Week Four: Repair (Douglas Laboratories)
0.5 g189 Fish Oil Sport (GNC Triple Strength); Muscle Support (Instaflex); Whey of Life Multi-Action Whey Protein Natural Chocolate Blitz Flavor (Bluebonnet)
2.5 g153 N'Gage Glacier Punch (Axis Labs); Competitive Mass (Lee Haney's Nutritional Support Systems); XTEND Lemon Lime Sour (Scivation)
3 g105 Lg5 Pro (All American EFX); RapidDrive Post-Workout Amino Complex Fruit Punch (GNC Pro Performance); Torch After-Burn Recovery Drink Creamy Vanilla Flavor (Market America)
2 g94 BC + EAA Blue Raspberry (LG Sciences); Shockwave Fruit Punch (Sci-Fit); Shockwave Grape (Sci-Fit)
0.1 g58 Ultra 5-HTP Formula (Douglas Laboratories); Ultimate-Plus (Ultra Plan); Nuclezyme-Forte (Biotics Research Corporation)
0.15 g53 Think Smart with Gingko Biloba (Whole Foods); Energy Enhancing Formula Refreshing Citrus (GNC Preventive Nutrition); Energy-Plex (DaVinci Laboratories Of Vermont)
1.5 g50 Gluta-Lyn 1500 (Sci-Fit); Gluta-Lyn 1500 Powder (Sci-Fit); Endura / PAK Guard Capsules (Perque)
0.2 g43 Ultra Minerals For Life (AB American Biologics); Complex-M with Ginkgo (Allergy Research Group); Advanced OKG 5000 (Healthy 'N Fit)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most glutamine?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 2.5 g; those entered in 2025, 1 g.

Median glutamine per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
2011372.5 g
2012911 g
20131360.5 g
20141171.5 g
20151102 g
20161122 g
20171212.5 g
20181152 g
2019631 g
20201702 g
20211340.97 g
20221461 g
20231681.5 g
20241761 g
20251541 g

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing glutamine by DSLD product type

Glutamine by product typeOther Combinations1,311Amino acid/Protein460Botanical with Nutrients71Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Glutamine by product typeOther Combinations1,311Amino acid/Protein460Botanical with Nutrients71Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Glutamine by product typeOther Combinations1,311Amino acid/Protein460Botanical with Nutrients71Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Glutamine by product typeOther Combinations1,311Amino acid/Protein460Botanical with Nutrients71Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1
Glutamine by product typeOther Combinations1,311Amino acid/Protein460Botanical with Nutrients71Non-Nutrient/Non-Botanical7Fiber and Other Nutrients1

Brands listing it most: Core Nutritionals (37), NutraBio (32), Universal (28), Douglas Laboratories (26), GNC Pro Performance (21), GNC Pro Performance AMP (21), CytoSport (21), XTEND (20), Pure Encapsulations (17), MRM Nutrition (17).

Every product listing glutamine

2,973 products, A to Z by name (page 27 of 60), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Where next?