Larazotide

Tight-junction regulator peptide. Reduces leaky gut and celiac-triggered inflammation.

Route: OralShelf life once mixed: ~30 daysCategory: Healing & Recovery

What Larazotide is

Larazotide is a synthetic octapeptide that functions primarily as an antagonist of zonulin, a protein involved in regulating the permeability of tight junctions in the intestinal epithelium. By binding to and inhibiting zonulin's activity, Larazotide helps to stabilize and strengthen these cellular junctions. This action reduces paracellular permeability, often described as "intestinal hyperpermeability" or "leaky gut," which can allow unwanted substances to cross the gut barrier and trigger immune responses. In conditions where the gut barrier is compromised, such as in certain inflammatory digestive states, Larazotide aims to restore barrier integrity, thereby potentially mitigating inflammation and adverse reactions caused by luminal antigens. The precise pharmacokinetic profile, including half-life, is context-dependent and subject to ongoing research.

While the immediate biochemical interactions begin upon administration, observable physiological effects related to gut barrier integrity and inflammation may require several weeks of consistent use to become apparent, as gut healing is a gradual process. Researchers might explore its use alongside other compounds intended to support gut health, such as various probiotics or prebiotics, to observe potential synergistic outcomes. Cycle lengths in research are determined by specific study protocols. It is important to remember that Larazotide is intended solely for research purposes and is not approved for medical treatment or human consumption outside of controlled research environments, and information provided should not be considered medical advice.

Commonly reported effects

Reduced intestinal permeability
Symptom relief in celiac

Reported side effects & considerations

Mild GI upset

Storage & handling

LYOPHILIZED (unopened): store at 2-8°C (fridge) or -20°C (freezer) long-term. Protect from light.

AFTER RECONSTITUTION: refrigerate 2-8°C. Do NOT freeze. Discard after 30 days OR if the solution becomes cloudy, discolored, or contains particulates.

What people track

Because individual responses vary so much, the useful thing is your own record: what you logged and when, how much is left in the vial, and how your chosen metrics move over the weeks. Peptide Wizard keeps all of that in one place, alongside a 3D reference vial for Larazotide.

FAQ

What is Larazotide?

Tight-junction regulator peptide. Reduces leaky gut and celiac-triggered inflammation.

What do people commonly report with Larazotide?

Commonly reported effects include reduced intestinal permeability, symptom relief in celiac.

How should Larazotide be stored?

LYOPHILIZED (unopened): store at 2-8°C (fridge) or -20°C (freezer) long-term. Protect from light.

How do I keep track of Larazotide in my research log?

Peptide Wizard lets you record each entry, keep a vial ledger so you know what's left, and chart your own metrics over time. It is a logbook and reference only — it does not calculate or recommend doses.