"This was the first time someone showed me what was happening and what to do about it. "
Practitioner grade
Practitioner only
L-glutamine
The main fuel source for your gut lining cells
L-glutamine is the most abundant amino acid in the body and the primary fuel source for intestinal enterocytes. Supports gut mucosal integrity, intestinal permeability repair and immune function.
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Practitioner consult session
A 15-minute consultation. An email link will be included in your order confirmation to make the booking.
Optional 1:1 with our clinical team · $49
TGA-listed AUST L
Practitioner-grade formula
Clinician-reviewed before dispatch
Ships in 2 business days
What's in it
Each ingredient is in its most bioavailable form, at a clinically meaningful dose. No fillers, no token amounts, no marketing-led blends.
Powder blend
L-Glutamine
Primary gut lining cell fuel.
Included
Always read the label and follow directions for use. Vitamins and minerals can only be of assistance if dietary intake is inadequate. If symptoms persist, consult a healthcare professional.
How to take it
Simple to take, with a few timing notes that make a real difference to absorption.
Mix into cold or room-temperature water. Do not use in hot liquids, heat degrades glutamine. Typically taken on an empty stomach, 3 times daily for gut repair protocols.
People with liver disease or hepatic encephalopathy should not use glutamine without medical supervision, glutamine can generate ammonia which may worsen hepatic encephalopathy. Dietary supplements should not replace a balanced diet.
Real people. Real impact.
Patients following practitioner-designed protocols, sharing their outcomes in their own words.
"My ferritin had been low-normal for three years. The protocol made a real difference within six weeks."
"Someone finally put all the pieces together. Clear, specific and actually useful."
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Part of the Gut Health hub. Explore all protocols, supplements and investigations.
Back to Gut Health →Frequently asked.
Common questions about how OptiLabs works: testing, supplements, clinician review, returns and timing.
Is glutamine the same as MSG?
No. Glutamine is an amino acid with distinct physiology. MSG (monosodium glutamate) is a sodium salt of glutamic acid — a different compound. They are metabolically related but are different molecules with different effects.
Are the supplements safe?
All carry an AUST L designation from the TGA. Every order is reviewed by a clinician before dispatch.
Do I need a referral?
No. All tests are available to order directly. Our lab partner is NATA and RCPA accredited, operating as a direct-access pathology service.
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Personalised health. Clinical rigour. Delivered to you.
A proper investigation into what's driving your symptoms, with a protocol built around your results, not a generic recommendation.