Product Image

Glutamine Pure Powder 5000 mg (5 g)

Country Life
4.8
★ ★ ★ ★ ★
(775 ratings)
Glutamine 5000 mg
Product Image
Score84
A full 5 g powder serving with strong value and no pill burden, though no micronized processing is stated.
How scoring works
Quantity:9 Ounce(s) • (55 servings)
Goals:
Digestive Health
Immunity

Score 84

A full 5 g powder serving with strong value and no pill burden, though no micronized processing is stated.
How scoring works
$20.89($0.37 per serving)
iHerb
$ 20.89
Vitacost
$ 20.89
Pure Formulas
$ 20.89
Amazon
$ 20.89
Report prices

Analysis

A full serving supplies 5 g of L-glutamine, aligning well with common multi-gram routines. Powder delivers the entire amount without capsules and allows the serving to be adjusted with the scoop.

The formula is simple and the active amount is clearly disclosed. Micronized processing is not identified, so mixing may be less convenient than with a finer powder.

The high amount per container provides strong cost efficiency for regular use. It is a good match for people who prioritize a full serving and do not mind mixing powder.

Who is it for
  • People seeking a full multi-gram serving
  • People comfortable mixing powder
Best for
  • Regular 5 g routines
  • Value-focused higher intake

Pros

  • 5 g in one serving
  • No capsule burden
  • Strong amount-per-container value

Cons

  • Micronized processing is not claimed
  • Requires measuring and mixing
  • Less convenient for travel than capsules

Warnings

  • A 5 g serving may cause digestive discomfort in sensitive users; beginning with a smaller portion can help assess tolerance.

Nutrient quality

92 Highest impact

The expected L-isomer is clear, but micronized processing and premium purity are not claimed; the powder supplies a full targeted amount in one serving. The disclosed glutamine amount is not unnecessarily aggressive; the amount fits digestive and general glutamine support well; the single-active formula contains no filler ingredients.

.

Ingredient transparency

77 High impact

Every listed active has a specific amount; no proprietary blend hides key doses. L-glutamine is plainly identified, while grade and powder-processing details are missing; serving directions and inactive ingredients are not supplied.

.

Customer satisfaction

72 High impact

The supplied aggregate average is favorable, though no individual feedback is available; the large rating sample improves confidence in the aggregate average, but no individual feedback is supplied. Detailed feedback is absent, so repeated complaints cannot be assessed; real-world fit with the intended purpose remains uncertain.

.

Value for money

97 Highest impact

A full serving strongly supports the price; the powder provides excellent active value. The single-active formula contains no filler ingredients; the product is highly competitive among pure glutamine powders.

.
Report analysis

Goals

Digestive Health
Impact
Highest effect
B+ Goal FitA Strength of SupportC- CoverageA+ Formula Quality
Glutamine · 5000 mg

L-glutamine directly supports intestinal-cell fuel needs and gut-barrier maintenance, giving the powder clear digestive relevance. The 5 g serving matches common gut-support use and provides meaningful depth from one ingredient.

The exact amount is transparent and free of a proprietary blend. Micronization is not stated, so mixing may be less convenient, while evidence for symptom improvement varies by digestive condition and population.

Study evidence
Glutamine Supportive 37 studies
Immunity
Impact
High effect
C Goal FitB- Strength of SupportC- CoverageB- Formula Quality

The main active ingredients offer some plausible support for daily physiology, but alignment with broad general health is limited. The formula covers a limited set of general-health pathways.

The disclosed amounts provide some usable support, though complete dose adequacy is uncertain. The label provides basic ingredient information but leaves some source or delivery details unclear.

Ingredients

IngredientAmount per serving
L-Glutamine
5000 mg
Gluten Free Adults 18–50 Vegan Kosher Dairy Free Sugar Free Vegetarian
Report overview
Glutamine · 5000 mg OverallScore86
C Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

A full serving supplies a clearly disclosed amount of L-glutamine aligned with common gut-support use. The powder is not identified as micronized, so mixing may be less convenient than with finer material. Its high amount per container also provides strong value.

Loading alternative details
Report alternatives

Sources

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

  1. 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 participantsDigestive Health forGlutamine
  2. Glutamine for chemotherapy induced diarrhea: a meta-analysis.
    Sun J; Wang H; Hu H · Asia Pacific journal of clinical nutrition · 2012
    Meta-analysis298 participants8 studies pooledDigestive Health forGlutamine
  3. Treatment of acute diarrhea with oral rehydration solutions containing glutamine.
    Ribeiro Júnior H; Ribeiro T; Mattos A; Palmeira C; Fernandez D; Sant'Ana I; Rodrigues I; Bendicho MT; Fontaine O · Journal of the American College of Nutrition · 1994
    Randomized trial120 participantsDigestive Health forGlutamine
  4. Phase III double-blind study of glutamine versus placebo for the prevention of acute diarrhea in patients receiving pelvic radiation therapy.
    Kozelsky TF; Meyers GE; Sloan JA; Shanahan TG; Dick SJ; Moore RL; Engeler GP; Frank AR; McKone TK; Urias RE; Pilepich MV; Novotny PJ; Martenson JA; North Central Cancer Treatment Group · Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2003
    Randomized trial129 participantsDigestive Health forGlutamine
  5. 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 pooledDigestive Health forGlutamine
  6. 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 pooledDigestive Health forGlutamine
  7. 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 participantsDigestive Health forGlutamine
  8. 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 participantsDigestive Health forGlutamine