Back to All Reviews
#11 in Amino Acids Third-Party Tested

Nutricost L-Glutamine Powder 5000mg

by Nutricost

"Pure L-glutamine powder for gut health, immune function, and muscle recovery — 100 servings at bulk value"

Amazon Rating
4.6/5
Reviews
10,000+
Price Range
$16-20
Servings
100 servings
GMP CertifiedThird-Party Tested
Our Editorial Rating
8.0
Very Good
FormPowder
CategoryAmino Acids
SubcategoryL-Glutamine
View on Amazon

Overview

Nutricost L-Glutamine Powder provides 5000mg of pure L-glutamine per scoop — the most abundant amino acid in the body and the primary fuel source for intestinal cells (enterocytes) and immune cells (lymphocytes). Glutamine supplementation is most valuable for gut health (intestinal barrier integrity), immune function during intense training, and muscle recovery. Glutamine levels can become depleted during intense exercise, illness, or stress, making supplementation beneficial during these periods. The unflavored powder mixes easily into any beverage.

Key Ingredients

IngredientAmount
L-Glutamine5000 mg

Pros & Cons

What We Like

  • 5g per scoop (clinical dose)
  • 100 servings (excellent value)
  • Pure single ingredient
  • Gut health and immune support
  • 10,000+ Amazon reviews

What Could Be Better

  • Unflavored (slightly sweet)
  • Benefits debated for well-nourished athletes
  • Powder requires mixing
  • Not essential if protein intake is adequate

Who Is This For?

Best For

  • Gut health and intestinal repair
  • Immune support during intense training
  • Post-illness recovery
  • Those with leaky gut concerns

Not Ideal For

  • Well-nourished athletes with adequate protein
  • Those wanting flavored supplements
  • Those preferring capsules

Our Verdict

8.0/10 — Very Good

Nutricost L-Glutamine is the maximum-value option for this gut-healing, immune-supporting amino acid. The 5g clinical dose and 100 servings provide months of supplementation. Most valuable during periods of intense training, illness, or gut health focus.

Alternatives to Consider