General Dosage
5-10g daily in divided doses (2-3 times per day)
Maximum dose: 40g/day used in clinical settings; 20g/day common upper limit for supplements
L-Glutamine (Gut Health) Dosage Guide
Evidence:Moderate
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Dosage Recommendations
General recommendation: 5-10g daily in divided doses (2-3 times per day)
Timing: Divide into 2-3 doses throughout the day; take on an empty stomach for best absorption
Dosage by Condition
Leaky gut / intestinal permeability
5-10g daily in divided dosesModerate
IBD support
5-15g dailyEmerging
Post-surgical gut recovery
10-20g daily (clinical setting)Moderate
| Condition | Recommended Dose | Evidence |
|---|---|---|
| Leaky gut / intestinal permeability | 5-10g daily in divided doses | Moderate |
| IBD support | 5-15g daily | Emerging |
| Post-surgical gut recovery | 10-20g daily (clinical setting) | Moderate |
Upper limit: 40g/day used in clinical settings; 20g/day common upper limit for supplements
Timing & Absorption
Divide into 2-3 doses throughout the day; take on an empty stomach for best absorption
Can be taken with or without food.