L-Glutamine
Scored by the Formulate Research Team · Last reviewed May 2026
Overview: Thorne L-Glutamine
An amino acid that promotes post-exercise muscle cell repair and supports gastrointestinal and immune system health* L-glutamine is an amino acid that supports a healthy intestinal lining and optimal immune function, in addition to assisting healing after injury or surgery and muscle cell repair.*
Score Breakdown
Formulate scores every product across six weighted dimensions. Each dimension is graded independently — hover or tap to see what drove each component.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| L-Glutamine | 1500 mg |
Certifications & Testing
Other Ingredients
Hypromellose (derived from cellulose) capsule, Silicon Dioxide
Recommended Use
Take 1 capsule three times daily or as recommended by your health-care practitioner.
Warnings
ALLERGY WARNING This product is contraindicated in an individual with a history of hypersensitivity to any of its ingredients. PREGNANCY If pregnant, consult your health-care practitioner before using this product. INTERACTIONS There are no known adverse interactions or contraindications at publication date.
Frequently Asked Questions
What is Thorne L-Glutamine's Formulate score?
Thorne L-Glutamine scores 86 out of 100 (grade A-) on Formulate's ingredient-level rubric, which weighs evidence quality, dose accuracy, bioavailability, transparency, safety, and manufacturing practices.
Is Thorne L-Glutamine worth it?
Thorne L-Glutamine scores 86/100 (grade A-). That puts it in Formulate's top tier: its ingredient doses, forms, and label transparency hold up against the clinical evidence, and it carries credible third-party testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Thorne L-Glutamine?
Each serving contains L-Glutamine (1500 mg). Serving size: 1 Capsule. 90 servings per container.
How do I take l-glutamine?
Take 1 capsule three times daily or as recommended by your health-care practitioner.
Who makes L-Glutamine?
L-Glutamine is made by Thorne. See Formulate's full grade and product lineup for Thorne on its brand page.
Is Thorne L-Glutamine third-party tested?
Thorne lists the following certifications and testing for this product: NSF Certified for Sport, Gluten Free, Dairy Free, Soy Free, Thorne Verified, Natural Flavors, Natural Colors, GMP Certified.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.