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L-Glutamine

Thorne
4.7
★ ★ ★ ★ ★
(4506 ratings)
Glutamine 500 mg
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Score85

A high-purity, 500 mg L-glutamine capsule that provides clean and focused support for intestinal and metabolic health.

How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:

Score 85

A high-purity, 500 mg L-glutamine capsule that provides clean and focused support for intestinal and metabolic health.

How scoring works
$26.00($0.28 per serving)
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Amazon
$ 26.00
Pure Formulas
$ 26.00
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Analysis

Providing 500 mg of pure L-glutamine per capsule, this supplement is designed for foundational gut and metabolic support. It uses a single-ingredient approach to ensure focused support without any unnecessary fillers or binders. This makes it a reliable choice for quality-conscious individuals who want a clean product.

While the dose per capsule is modest, it allows for very precise dosing throughout the day. It is well-suited for maintaining the health of the intestinal lining and overall metabolic balance. This is a high-standard, dependable option for basic daily amino acid maintenance.

Pros

  • High manufacturing standards
  • Clean, single-ingredient formula
  • Supports intestinal tissue health
  • Easy-to-swallow capsules
  • Transparent labeling

Cons

  • Lower dose per capsule
  • Requires many capsules for higher intake
  • Higher cost for the dose provided

Warnings

  • Best taken on an empty stomach
  • Monitor for any digestive changes
  • Store away from heat and moisture

Nutrient quality

82 Highest impact

High-purity L-Glutamine is provided in a clean delivery format that avoids unnecessary fillers. While the 500mg dose is appropriate for maintenance, it may require multiple capsules to reach the higher thresholds used in clinical settings.

Ingredient transparency

99 Highest impact

The label provides complete transparency by specifying the exact dosage of L-Glutamine and listing all excipients. Usage instructions are clear, and the absence of proprietary blends makes the content easy to evaluate.

Customer satisfaction

94 Highest impact

A very high average rating supported by thousands of reviews indicates consistent reliability and efficacy. Feedback aligns well with the intended use for gut health and recovery, with very few recurring complaints.

Value for money

62 Moderate impact

Premium pricing reflects the high manufacturing standards and brand reputation rather than the volume of active ingredients. The cost per serving is significantly higher than competitive powder options, which may impact long-term affordability for high-dose users.

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Ingredients

IngredientAmount per serving
L-Glutamine
500 mg
Gluten Free Adults 18–50
Report overview
Glutamine · 500 mg OverallScore56
B- Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyD- Value
As a single-ingredient capsule, this supplement offers high-quality L-glutamine in a convenient form for general metabolic support. However, multiple capsules would be required to reach the higher dosages typically used in clinical protocols.
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