The Intestinal Fortitude GLR-6 - Gut Lining Repair Supplement for from Intestinal Fortitude is engineered to deliver results you can feel.
For those who train hard and need to bounce back faster, glutamine is a smart addition.
Intestinal Fortitude's L-glutamine supplement supports gut health, immune function, and post-workout muscle recovery.
100% plant-based and vegan-friendly — no animal-derived ingredients here.
Strikes a good balance between quality ingredients and reasonable pricing.
Available at $39.99 — a competitive price point for the US market.
If Intestinal Fortitude is a brand you trust, this product reinforces that confidence.
The brand behind this product — their story and what they stand for.
US-based supplement brand offering glutamine and gut health supplements.
Understand which fitness goals this product is best suited for.
Track how the price has changed over the last 90 days on Amazon.com.
See how this product compares to similar options in its category.
| This Product | THORNE | BulkSupplements | Pure Encapsulations | |
|---|---|---|---|---|
| Price | $39.99 | $67.00 | $20.98 | $24.50 |
| Per Serving | - | - | - | - |
| Servings | — | — | — | — |
| Lab Tested | ✗ | ✓ | ✓ | ✓ |
| Rating | 4.3 ★ | 4.7 ★ | 4.6 ★ | 4.6 ★ |
Common questions about this product — answered clearly and honestly.
Yes, this product is 100% vegan and contains no animal-derived ingredients.
As of our last check, this product does not have publicly listed third-party lab testing. Look for brands that offer Trustified, NABL, or Labdoor certifications for verified purity.
THORNE
THORNE - L-Glutamine Powder - Amino Acid Supplement for Immune System & GI Health - Promotes Post-Exercise Muscle Cell Repair* - NSF Certified for Sport - Gluten, Dairy & Soy-Free - 90 Servings
BulkSupplements
BulkSupplements.com L-Glutamine Powder - Glutamine Supplement, for Recovery & Gut Health - Unflavored & Gluten Free, 5g (5000mg) per Serving, 500g (1.1 lbs) (Pack of 1)
Pure Encapsulations
Pure Encapsulations L-Glutamine 500 mg - Supplement for Immune and Digestive Support, Gut Health and Lining, Metabolism, and Muscle Support* - with Free-Form L-Glutamine - 90 Capsules
Nutricost
Nutricost L-Glutamine 800mg, 180 Capsules - Gluten Free, Non-GMO
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