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The THORNE - L-Glutamine Powder - Amino Acid Supplement for Immune from THORNE is engineered to deliver results you can feel.
Glutamine supports gut health and muscle recovery — this is a clean, effective option.
THORNE's L-glutamine supplement supports gut health, immune function, and post-workout muscle recovery.
NSF Certified for Sport — tested for banned substances and label accuracy, making it a trusted choice for competitive athletes.
A practical addition to your daily wellness routine.
Suitable for vegetarians, so you can supplement confidently on a plant-inclusive diet.
A premium-tier product for those willing to invest in top-shelf formulations.
Typically ranges from $61–$71 — a competitive price point for the US market.
A well-rounded offering from THORNE that checks the right boxes for most users.
The brand behind this product — their story and what they stand for.
Physician-trusted supplement brand used by elite athletes and partnered with Mayo Clinic. NSF Certified for Sport.
Understand which fitness goals this product is best suited for.
General Health
A solid addition to your daily wellness routine, supporting overall nutrition and vitality.
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 | $67.00 | $25.30 | $14.97 | $24.03 |
| Per Serving | - | - | - | - |
| Servings | — | — | — | — |
| Lab Tested | ✓ | ✓ | ✓ | ✓ |
| Rating | 4.7 ★ | 4.6 ★ | 4.8 ★ | 4.6 ★ |
Common questions about this product — answered clearly and honestly.
Yes, this product is vegetarian-friendly. It does not contain any non-vegetarian ingredients.
Yes, this product has been lab tested by NSF Certified for Sport. Third-party lab testing verifies that the product contains what the label claims, giving you confidence in its quality and 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.
