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L-Glutamine pour Irritable Bowel Syndrome (IBS)

C

Pilot RCTs suggest glutamine (5 g TID) reduces intestinal permeability and IBS-D symptoms in post-infectious IBS. Promising but needs larger trials.

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C

En conclusion

Pilot RCTs suggest glutamine (5 g TID) reduces intestinal permeability and IBS-D symptoms in post-infectious IBS. Promising but needs larger trials.

Key Study Findings

Other
Unraveling the active ingredients and molecular mechanisms of Qinghua Changyan granule against irritable bowel syndrome …
Dose: None vs: None Outcome: IBS-D symptom relief via gut microbiota and glutamine … Effet: None None

Population: animal model of IBS with diarrhea

Other n=25 4 weeks
Effect of probiotic administration of Bifidobacterium animalis subsp. lactis BB-12 and Lactiplantibacillus plantarum ATCC 14917 …
Dose: Bifidobacterium animalis subsp. lactis BB-12 and Lactiplantibacillus plantarum ATCC 14917 vs: phosphate-buffered saline (PBS) Outcome: visceral hypersensitivity (abdominal withdrawal reflex scores) Effet: None p<0.05

Population: female rats with water avoidance stress-induced IBS-D model

Other n=62
[Study on activation mechanism of SGCs in representation along the distribution of stomach meridian in …
Dose: None vs: Control group (no citrobacter) Outcome: SGC activation in DRG segments Effet: None P<0.05 to P<0.01

Population: Male C57BL/6 mice (IBS-D model)

Review
Intestinal Barrier Impairment, Preservation, and Repair: An Update.
Dose: None vs: None Outcome: Intestinal barrier preservation and repair Effet: None None

Population: IBD and IBS patients (review)

Other
Multi-Omics Reveals the Effects of Cannabidiol on Gut Microbiota and Metabolic Phenotypes.
Dose: None vs: None Outcome: Cholesterol levels Effet: None None

Population: Mouse model

In Vitro
Effects of Glutamine, Curcumin and Fish Bioactive Peptides Alone or in Combination on Intestinal Permeability …
Dose: None vs: None Outcome: inflammation markers Effet: None None

Population: Mice

Key Statistics

2

Études

150

Participants

Positive

C

Note

Referenced Papers

Praxis 2018

Dosage & Usage

mg = milligrams · mcg = micrograms (1,000× smaller) · IU = International Units

Posologies couramment utilisées

general:
5-15 g/day
ibsdsupport:
5 g three times daily (15 g/day total)
postexercisegut:
0.25-0.9 g/kg before intense exercise
gutbarriersupport:
0.5 g/kg/day (approximately 30-40 g/day for adults)

Limite supérieure : Generally well-tolerated up to 0.5 g/kg/day; caution above 40 g/day

Posologies étudiées dans la recherche

Posologie Durée Effet N
None -- Positive --
Bifidobacterium animalis subsp. lactis BB-12 and Lactiplantibacillus plantarum ATCC 14917 4 weeks Positive 25
None -- Mixed 62
None -- Positive --
None -- Positive --
None -- Mixed --
None -- Mixed --
None -- Negative 75

Moment optimal de prise : Between meals or before exercise; divide doses throughout the day

Safety & Side Effects

Effets indésirables signalés

  • Mild gastrointestinal discomfort at high doses
  • Headache
  • Dizziness at very high doses
  • Potential glutamate excitotoxicity concerns in neurological conditions (theoretical)

Interactions connues

  • Lactulose (glutamine may reduce the efficacy of lactulose for hepatic encephalopathy)
  • Anti-seizure medications (glutamine converts to glutamate; theoretical concern)
  • Chemotherapy agents (glutamine may protect cancer cells; discuss with oncologist)

Apport maximal tolérable : Generally well-tolerated up to 0.5 g/kg/day; caution above 40 g/day

Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.Consultez toujours votre professionnel de santé avant de commencer tout complément alimentaire.

Frequently Asked Questions

Does L-Glutamine help with Irritable Bowel Syndrome (IBS)?
Based on 2 studies with 150 participants, there is limited but promising evidence that L-Glutamine may support Irritable Bowel Syndrome (IBS) management. Our evidence grade is C (Some Evidence).
How much L-Glutamine should I take for Irritable Bowel Syndrome (IBS)?
Studies have used various dosages. A commonly studied range is 5-15 g/day. Always consult your healthcare provider before starting any supplement regimen.
Are there side effects of L-Glutamine?
Reported side effects may include Mild gastrointestinal discomfort at high doses, Headache, Dizziness at very high doses, Potential glutamate excitotoxicity concerns in neurological conditions (theoretical). Most side effects are mild and dose-dependent. Consult your doctor if you experience any adverse reactions.
How strong is the evidence for L-Glutamine and Irritable Bowel Syndrome (IBS)?
We rate the evidence as Grade C (Some Evidence). This rating is based on 2 peer-reviewed studies with 150 total participants. The overall direction of effect is positive.

Related Evidence

Avertissement FDA: Ces déclarations n'ont pas été évaluées par la Food and Drug Administration. Les produits et informations sur ce site ne sont pas destinés à diagnostiquer, traiter, guérir ou prévenir quelque maladie que ce soit. Les notes de preuve présentées sont basées sur notre analyse de la recherche publiée et évaluée par des pairs et ne constituent pas un avis médical. Consultez toujours votre professionnel de santé avant de commencer tout régime de compléments alimentaires.