Glutamine
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
Certifications & Testing
Recommended Use
Suggested use: Take 1 level scoop (5 g) mixed with your favorite beverage 2 to 3 times daily. On training days take first serving 20 minutes prior to workout, second serving immediately following workout, second serving immediately following workout, and an optional third serving before sleep. On non-training days, space your servings evenly throughout the day with your last serving before sleep.
Warnings
Warning: Keep out of reach of children. Not for use by individuals under the age of 18 years. Do not use if pregnant or nursing. Consult a physician before use if you have a medical condition or are taking any medication. Discontinue use two weeks prior to surgery. Processed in a facility that also processes milk and tree nuts.
Frequently Asked Questions
What is NutraBio Glutamine's Formulate score?
NutraBio Glutamine scores 92 out of 100 (grade A) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is NutraBio Glutamine worth it?
NutraBio Glutamine scores 92/100 (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 NutraBio Glutamine?
Each serving contains L-Glutamine (5 g). Serving size: 5 Gram(s). 100 servings per container.
How do I take glutamine?
Suggested use: Take 1 level scoop (5 g) mixed with your favorite beverage 2 to 3 times daily. On training days take first serving 20 minutes prior to workout, second serving immediately following workout, second serving immediately following workout, and an optional third serving before sleep. On non-training days, space your servings evenly throughout the day with your last serving before sleep. For optimum results take in conjunction with NutraBio Creatine and Whey Protein Isolate.
Who makes Glutamine?
Glutamine is made by NutraBio. See Formulate's full grade and product lineup for NutraBio on its brand page.
Is NutraBio Glutamine third-party tested?
NutraBio lists the following certifications and testing for this product: cGMP Certified, Non-GMO, Vegetarian, Gluten-Free.
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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.