As an affiliate, we earn from qualifying purchases. Price may vary.
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.
Typically ranges from $36–$42 — 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 | Sports Research | NOW Foods | |
|---|---|---|---|---|
| Price | $39.99 | $25.30 | $14.97 | $24.03 |
| Per Serving | - | - | - | - |
| Servings | — | — | — | — |
| Lab Tested | ✗ | ✓ | ✓ | ✓ |
| Rating | 4.3 ★ | 4.6 ★ | 4.8 ★ | 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 - Amino Acid Supplement for Immune System & GI Health - Promotes Post-Exercise Muscle Cell Repair* - Third-Party Certified - Gluten, Dairy & Soy-Free - 90 Capsules
Sports Research
Sports Research L-Glutamine - Workout Recovery, Immune Health & Gut Health Support - 5 G Per Serving - 10.58 Oz
NOW Foods
NOW Foods Sports Nutrition, L-Glutamine Pure Powder, Nitrogen Transporter*, Amino Acid, 1-Pound
Clean Nutraceuticals
Clean Nutraceuticals Colostrum Supplement Capsules Probiotics Pills Prebiotics, L-Glutamine, Digestive Enzymes, Folate, Fiber, ACV, Turmeric, Apple Pectin and Turmeric Pills
In-depth guides and articles to help you make a more informed choice.
