L-Glutamine Powder
amino acids
L-Glutamine is a conditionally essential amino acid that serves as a primary fuel source for intestinal and immune cells. It supports gut barrier integrity, muscle recovery, and immune function, particularly during periods of physical stress or illness.
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Benefits
Dosage
Typical Dose
5-10g daily
Upper Limit
40g daily
Timing
Post-workout or between meals; split into multiple doses for optimal absorption
Forms & Bioavailability
Powder
High absorption rate; easily mixed into beverages or food; rapid intestinal uptake
Capsules
Good absorption; convenient dosing; slightly slower than powder form
Side Effects
Interactions
Research Summary
Clinical research demonstrates L-glutamine's efficacy in supporting gut health, particularly in individuals with compromised intestinal barriers or inflammatory conditions. Studies show benefits for muscle recovery and immune function in athletes and critically ill patients. However, evidence in healthy individuals remains mixed, suggesting supplementation is most beneficial during periods of physical stress, intense training, or immune challenge.
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The Bottom Line on L-Glutamine Powder
L-Glutamine Powder is well-researched with strong evidence supporting its primary benefits.It is most commonly used for supports gut barrier integrity and intestinal health and enhances muscle recovery and reduces soreness. As with any supplement, individual results vary. Start with the lower end of the dosage range and assess for 4-8 weeks before adjusting.
About Our Research
This profile is compiled from peer-reviewed research published on PubMed, the NIH Office of Dietary Supplements, and established nutritional science databases. Dosages reflect clinically-studied amounts from human trials where available. We update profiles as new research emerges. This is not medical advice — consult a healthcare professional before supplementing.
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Goal Guides for L-Glutamine Powder
See how L-Glutamine Powder can help with specific health goals: