L-Glutamine Pure Powder

L-Glutamine Pure Powder

Best Naturals4.7 (274 ratings)
Format:Powder Quantity: 1 lb(s) · 90 servings
Goals
$24.55 $0.27 per serving

Product analysis

62 out of 100

L-Glutamine Pure Powder offers a simple, economical way to take glutamine. Its gut and immune findings come from selected patient or endurance-exercise settings, so routine benefits for other adults remain uncertain.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The glutamine preparation is not clearly disclosed. The powder name alone does not establish its quality.

Ingredient Transparency63

The glutamine amount is stated. The preparation is not clearly identified, limiting closer comparison.

Value For Money100

The glutamine amount compares favorably on cost. The single-ingredient formula offers an economical way to buy glutamine.

Customer Satisfaction74

Customer ratings are positive across a few hundred reviews. They reflect reported satisfaction, without confirming gut or immune benefits.

Product Focus81

A single glutamine ingredient keeps the formula focused. Its gut and immune findings are specific to selected groups and regimens.

Format
Powder
Container
1 lb(s)
Per serving
$0.27
Customer rating
4.7 · 274 ratings
Report analysis

Goals

Gut Health
Impact
High effect
A+ Ingredient FitC- PathwaysB EvidenceA+ Formulation Logic
Glutamine · 5000 mg
Study evidence
Glutamine Supportive 37 studies
Immunity
Impact
Highest effect
A+ Ingredient FitD+ PathwaysB+ EvidenceA+ Formulation Logic
Study evidence
Glutamine Supportive 36 studies

Ingredients

IngredientAmount per servingScore
L-Glutamine
5000 mg 88
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Glutamine · 5000 mg OverallScore88
B- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
Each serving provides 5,000 mg of L-glutamine at a low estimated cost per gram. No premium grade is specified.
How this ingredient is rated

Active Ingredient Quality & Bioavailability70

It lists L-glutamine, without a specified premium grade.
Glutamine Grade & Purity
It lists L-glutamine, without a specified premium grade.

Dose, Safety & Label Transparency100

Each serving provides 5,000 mg of L-glutamine.
Therapeutic Dosage Strength
Each serving provides 5,000 mg of L-glutamine.
Label Transparency & Blends
The L-glutamine amount is individually stated.

Value100

The estimated cost per gram of glutamine is low.
Price per Gram of L-Glutamine
The estimated cost per gram of glutamine is low.
Report alternatives

Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. Effect of perioperative glutamine-enriched nutritional support on patients with colorectal cancer: A systematic review and meta-analysis.
    Huang Y; Yang XZ; Qin SH; Zhang T; Xie M; Wang JW · World journal of gastrointestinal surgery · 2026
    Meta-analysis1,643 participants27 studies pooledGut Health Immunity forGlutamine
  2. Glutamine prevents diarrhea in colorectal cancer patients undergoing chemotherapy or chemoradiotherapy: a meta-analysis.
    Chen L; Wang D; Meng C; Sun H; Li R; Miao G; Liu P · BMC gastroenterology · 2025
    Meta-analysis311 participants5 studies pooledGut Health forGlutamine
  3. Glutamine supplementation reduces markers of intestinal permeability during running in the heat in a dose-dependent manner.
    Pugh JN; Sage S; Hutson M; Doran DA; Fleming SC; Highton J; Morton JP; Close GL · European journal of applied physiology · 2018
    Randomized trial10 participantsGut Health forGlutamine
  4. Effect of glutamine supplementation on diarrhea, interleukin-8 and secretory immunoglobulin A in children with acute diarrhea.
    Yalçin SS; Yurdakök K; Tezcan I; Oner L · Journal of pediatric gastroenterology and nutrition · 2004
    Randomized trial128 participantsGut Health forGlutamine
  5. Improvement of intestinal permeability with alanyl-glutamine in HIV patients: a randomized, double blinded, placebo-controlled clinical trial.
    Leite RD; Lima NL; Leite CA; Farhat CK; Guerrant RL; Lima AA · Arquivos de gastroenterologia · 2013
    Randomized trial46 participantsGut Health forGlutamine
  6. Meta-analysis of Glutamine on Immune Function and Post-Operative Complications of Patients With Colorectal Cancer.
    Yang T; Yan X; Cao Y; Bao T; Li G; Gu S; Xiong K; Xiao T · Frontiers in nutrition · 2021
    Meta-analysis2,201 participants31 studies pooledImmunity forGlutamine
  7. Efficacy of Glutamine in Treating Severe Acute Pancreatitis: A Systematic Review and Meta-Analysis.
    Dong S; Zhao Z; Li X; Chen Z; Jiang W; Zhou W · Frontiers in nutrition · 2023
    Meta-analysis1,201 participants30 studies pooledImmunity forGlutamine
  8. Decreased mortality and infectious morbidity in adult burn patients given enteral glutamine supplements: a prospective, controlled, randomized clinical trial.
    Garrel D; Patenaude J; Nedelec B; Samson L; Dorais J; Champoux J; D'Elia M; Bernier J · Critical care medicine · 2003
    Randomized trial45 participantsImmunity forGlutamine
  9. Glutamine administration reduces Gram-negative bacteremia in severely burned patients: a prospective, randomized, double-blind trial versus isonitrogenous control.
    Wischmeyer PE; Lynch J; Liedel J; Wolfson R; Riehm J; Gottlieb L; Kahana M · Critical care medicine · 2001
    Randomized trial26 participantsImmunity forGlutamine