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L-Glutamine

Thorne
4.7
★ ★ ★ ★ ★
(4569 ratings)
Glutamine 500 mg
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Score72
A clean 500 mg L-glutamine serving is convenient at low intake, but gram-level use creates a capsule burden.
How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:

Score 72

A clean 500 mg L-glutamine serving is convenient at low intake, but gram-level use creates a capsule burden.
How scoring works
$26.00($0.28 per serving)
iHerb
$ 26.00
Vitacost
$ 26.00
Vitacost
$ 26.00
Amazon
$ 26.00
Pure Formulas
$ 26.00
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Analysis

L-glutamine supplies fuel used by intestinal and immune cells, with the clearest practical role during physiological stress or inadequate intake. A single-ingredient formula avoids competing actives and proprietary blends.

The 500 mg amount is fully disclosed, yet gram-level use would require several capsules. No premium purity grade or specialized processing claim is provided in the supplied data.

The 90-capsule supply offers basic convenience. Cost per gram is middling rather than economical. A powder is more efficient for people seeking several grams, while the capsule format fits lower-dose users who value portability.

Who is it for
  • Adults wanting a portable glutamine format
  • People using a modest daily amount
  • Users comfortable taking several capsules when needed
Best for
  • Simple single-ingredient routines
  • Travel-friendly glutamine use
  • People who dislike mixing powders

Pros

  • L-glutamine is clearly identified
  • Exact amount is disclosed
  • No unrelated active ingredients

Cons

  • About 6 capsules are needed for 3 g
  • No premium purity grade
  • Cost per gram is middling rather than economical.

Nutrient quality

79 High impact

Clear L-glutamine labeling and the capsule format support straightforward use. The single serving is low for targeted glutamine support, while the amount is conservative and not excessive.

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Ingredient transparency

79 High impact

The active amount is disclosed without a hidden blend. Intake directions and inactive ingredients are not supplied.

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Customer satisfaction

71 High impact

The supplied average rating is strong and comes from a large rating pool. No firsthand experiences or recurring complaint details were provided, so consistency remains uncertain.

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Value for money

57 Moderate impact

The simple formula is clean, but the low amount and moderate cost limit value. Powder or higher-dose options are more competitive.

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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

The capsule provides clearly disclosed L-glutamine without a stated premium purity grade. Its per-capsule amount is modest, so several capsules are needed for a substantial daily intake. The cost per gram offers middling value rather than the economy expected from a simple single-ingredient formula.

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84 Performance

Glutamine Pure Powder 5000 mg (5 g)

Country Life
<p>Its label clearly provides 5000 mg of L-Glutamine, making it a more clearly defined glutamine option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.</p>
82 Performance

L-Glutamine Powder

Bluebonnet
<p>Its label clearly provides 5000 mg of L-Glutamine, Powder, making it a more clearly defined glutamine option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.</p>
80 Performance

Theracurmin & L-Glutamine

Natural Factors CurcuminRich
<p>Its label clearly provides 5000 mg of L-Glutamine, Micronized, making it a more clearly defined glutamine option. Compared with the original, its ingredient and goal alignment is stronger, although the input does not provide independent testing or absorption evidence.</p>
83 Budget

Micronized L-Glutamine 1000 mg

Natural Factors
<p>Its label clearly provides 1000 mg of L-Glutamine, Micronized, preserving relevant glutamine coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.</p>
82 Budget

L-Glutamine

Jarrow Formulas
<p>Its label clearly provides 1000 mg of L-Glutamine, preserving relevant glutamine coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.</p>
80 Budget

L-Glutamine Powder

Metabolic Maintenance
<p>Its label clearly provides 1000 mg of L-Glutamine, preserving relevant glutamine coverage. Compared with the original, it lowers the serving cost, although the input does not provide independent testing or absorption evidence.</p>
84 Value

L-Glutamine Pure Powder

Best Naturals
<p>Its label clearly provides 5000 mg of L-Glutamine, keeping the formula relevant to glutamine. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although the input does not provide independent testing or absorption evidence.</p>
84 Value

Glutamine 300

PS ProSupps
<p>Its label clearly provides 4500 mg of L-Glutamine, keeping the formula relevant to glutamine. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although the input does not provide independent testing or absorption evidence.</p>
82 Value

Pharmaceutical Grade AjiPure L-Glutamine 500 mg

Swanson Ultra
<p>Its label clearly provides 500 mg of L-Glutamine, keeping the formula relevant to glutamine. Compared with the original, the lower serving cost and ingredient detail create a useful quality-to-cost balance, although the input does not provide independent testing or absorption evidence.</p>
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