StackTerminal.Health

BETA

Glutamine

Glutamine is the most abundant amino acid in the body & the primary fuel for enterocytes & immune cells; evidence supports its role in preserving gut barrier integrity under stress & dramatically reducing symptoms in post-infectious irritable bowel syndrome.

gut-healthimmunerecoverymucosal-integritysports
Evidence last reviewed: 04 Apr 2026
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Biomarkers studied
Outcomes directly measured across the evidence records below
Gut
Gut Permeability
Evidence
2 records
Post-infectious irritable bowel syndrome (IBS-D) symptom severity
Adults with diarrhea-predominant post-infectious IBSRCT
PUBMEDModerate

A randomized placebo-controlled trial (n=106) found 79.6% of the glutamine group versus 5.8% of placebo achieved the primary endpoint (≥50-point reduction in IBS Severity Scoring System), a 14-fold difference; glutamine also reduced bowel movement frequency & improved intestinal permeability measures.

Dose: 10000 mgDuration: 8 weeks
Intestinal permeability in adults
Mixed adult populations (athletes, surgical, critical illness)systematic review and meta-analysis of RCTs
PUBMEDLow

Meta-analysis of 10 clinical trials (n=352) found that overall glutamine supplementation did not significantly reduce intestinal permeability, but subgroup analysis showed significant benefit at doses >30 g/day for durations under 2 weeks, suggesting dose-dependent effects.

Dose: 10000 mgDuration: variable
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