Legal status · United States
Is Larazotide legal in the United States?
No. Larazotide is not approved for any medical use in the United States; its classification is "Investigational, not approved". Lawful access is limited to registered clinical trials. "Research use only" labeling on vials sold online does not make human use lawful. Human evidence to date: Moderate.
Larazotide in the United States at a glance
| Classification | Investigational, not approved |
|---|---|
| FDA approval status | Investigational; Phase 3 did not meet primary endpoint |
| Evidence level | Moderate (research strength: Moderate) |
| Reviewed | Sep 2026 |
Classification and note come from the Larazotide profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
Larazotide is being studied in registered clinical trials but has not received FDA marketing approval in the United States.
- 02
Lawful human access is limited to trial participation or a formal early-access scheme where one exists; there is no pharmacy product to prescribe.
- 03
Vials sold online "for research use only" are not trial material, and that label does not make human use lawful.
What Larazotide is
An investigational gut-barrier peptide for celiac disease that reached Phase 3 but was terminated by the sponsor without a published result.
Larazotide acetate is an orally active peptide that tightens the intestinal barrier by acting as a zonulin antagonist, aiming to reduce the leaky-gut response to gluten in celiac disease. It advanced to Phase 3, but the pivotal trial was terminated by the sponsor without a published result, and it is not approved.
Mechanism: Antagonizes zonulin signaling to strengthen intestinal tight junctions and limit passage of gluten fragments across the gut lining.
Regulatory history: Investigational; Phase 3 did not meet primary endpoint
How FDA treats this kind of product
Approves prescription drugs by indication and polices unapproved products, including peptides sold online. Compounding pharmacies may prepare some compounds under a prescription when the FDA places them on a permitted bulk-substances category.
The classification above is the The Longevity Archive reading of U.S. Food and Drug Administration listings for Larazotide at the reviewed date, not a legal opinion. Rules change, and importing, prescribing and possessing a compound can each be treated differently. Check the regulator directly before acting on anything here.
Larazotide in other countries
Frequently asked questions
Is Larazotide legal in the United States?
No. Larazotide is not approved for any medical use in the United States; its classification is "Investigational, not approved". Lawful access is limited to registered clinical trials. "Research use only" labeling on vials sold online does not make human use lawful. Human evidence to date: Moderate.
Can I buy Larazotide in the United States?
No approved product exists to buy. In the United States Larazotide is classified as "Investigational, not approved", so there is no licensed pharmacy product. Vendors selling it "for research use only" are not selling it for human use, and that label does not change its legal status. This site does not list or recommend vendors.
Is Larazotide FDA approved?
No. FDA status: Investigational; Phase 3 did not meet primary endpoint. Current US classification: "Investigational, not approved". Evidence level: Moderate.
Related compounds in the United States
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Larazotide live on its compound profile.
Larazotide profileThis page is general information about the regulatory status of Larazotide in the United States, current as of Sep 2026. It is not legal advice, and classifications change; check U.S. Food and Drug Administration directly or consult a lawyer for a specific situation. Educational use only. This database summarizes published research. It is not medical advice and contains no dosing protocols or recommendations for personal use. The Longevity Archive has no vendor relationships and does not recommend where to buy anything.