Amino acid that supports gut lining integrity and immune function.
How it works
L-Glutamine is the primary fuel source for enterocytes (intestinal cells) and helps maintain gut barrier integrity.
Evidence-based uses
Supports gut lining repair. Useful for leaky gut and post-antibiotic recovery.
Clinical Evidence
Multicentre RCT found 15g/day L-glutamine for 8 weeks significantly reduced intestinal permeability and IBS symptom severity compared to placebo.
Safety
Glutamine may counteract the effects of lactulose, which is used to treat hepatic encephalopathy by reducing ammonia levels. Glutamine can increase ammonia.
Glutamine is a precursor to glutamate, an excitatory neurotransmitter. It may theoretically lower the seizure threshold in susceptible individuals.
Compare prices
5 products compared across Australian retailers. Sorted by price per serve.
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| Product | Price | /serve | |
|---|---|---|---|
Best BulkSupplements BulkSupplements L-Glutamine Powder BulkSupplements | $24.90 | $0.12 | |
NOW Foods NOW L-Glutamine 1000mg iHerb | $19.50 | $0.16 | |
NOW Foods L-Glutamine Powder 1kg iHerb | $34.99 | $0.17 | |
BulkSupplements L-Glutamine Powder 500g BulkSupplements | $24.99 | $0.25 | |
Thorne Thorne L-Glutamine Powder Thorne | $52.00 | $0.58 |
Prices in AUD. Some links are affiliate links — we may earn a commission at no extra cost to you.
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Head to head
L-Glutamine has 2 known interactions. Check if it's safe with your medications.
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This information is for educational purposes only and is not intended as medical advice. Always consult a healthcare professional before starting any supplement. Evidence ratings are based on peer-reviewed clinical research. Individual results may vary.