Supplement profile

L-Glutamine

Secondary supplementGut HealthRecovery

The primary fuel for gut enterocytes — directly supports intestinal lining integrity and repair.

Evidence Level

Anecdotal
Emerging
Moderate
Strong

Dosage

5–10g daily

Timing

On an empty stomach — morning and/or before bed for maximum mucosal absorption

Form

powder, capsule

How it works

Glutamine is the preferred energy substrate for the rapidly dividing cells of the gut lining. Under conditions of gut inflammation or injury, glutamine demand exceeds endogenous supply. Supplemental glutamine reduces intestinal permeability (leaky gut), supports tight junction integrity, and accelerates mucosal healing alongside BPC-157.

What to look for

Pharmaceutical-grade L-glutamine, unflavoured powder. No fillers or additives. Store in a cool, dry place — glutamine degrades in humidity. Avoid L-glutamine products with artificial sweeteners if treating gut dysbiosis.

Our recommendation

Buying L-Glutamine

No brand partner yet. Here's our independent guidance on what makes a quality product.

Look for third-party tested products with verified purity, correct form and dosage. Avoid proprietary blends and underdosed formulations.

When ProtocolHub establishes a verified partner for this supplement, a specific product recommendation will appear here. Our editorial recommendations are never influenced by commercial relationships.

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Pairs with these peptides

L-Glutamine directly amplifies the effects of these peptide protocols.

Protocols using L-Glutamine

These clinician-reviewed protocol stacks include L-Glutamine as part of their supplement plan.

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Medical disclaimer

The information on this page is for educational purposes only and does not constitute medical advice. All peptide and supplement therapies should be discussed with an AHPRA-registered medical practitioner before use. ProtocolHub does not prescribe, dispense, or supply any therapeutic goods. Always consult a qualified healthcare professional before starting any new health protocol.