Legal status · United States
Is IGF-1 LR3 legal in the United States?
No. IGF-1 LR3 is not an approved medicine in the United States; its classification is "Not approved; research use only". Nothing containing it is authorized for any use in people. Vials labeled "for research use only" are not exempt: that label does not make human use lawful. Human evidence: Preliminary.
IGF-1 LR3 in the United States at a glance
| Classification | Not approved; research use only |
|---|---|
| FDA approval status | Not FDA-approved |
| Evidence level | Preliminary (research strength: Moderate) |
| Reviewed | Sep 2026 |
Classification and note come from the IGF-1 LR3 profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
No product containing IGF-1 LR3 is approved by FDA for any use in the United States, so nothing on the market is authorized for people.
- 02
"Research use only" is a vendor label, not a legal category that permits human use. It does not exempt a product from medicines law.
- 03
Importing, supplying or promoting it for human use can fall under medicines legislation in the United States. This page is general information, not legal advice.
What IGF-1 LR3 is
A long-acting analogue of IGF-1 studied in animal models for muscle growth and tissue repair.
IGF-1 LR3 is a modified version of insulin-like growth factor 1 with an arginine substitution and an N-terminal extension that reduce binding to IGF-binding proteins, extending its half-life to roughly a day. It is studied in animal models for muscle protein synthesis and repair.
Mechanism: Activates the IGF-1 receptor, driving cellular growth, proliferation, and protein synthesis; reduced binding-protein affinity prolongs activity.
Regulatory history: Not FDA-approved
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 IGF-1 LR3 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.
IGF-1 LR3 in other countries
Frequently asked questions
Is IGF-1 LR3 legal in the United States?
No. IGF-1 LR3 is not an approved medicine in the United States; its classification is "Not approved; research use only". Nothing containing it is authorized for any use in people. Vials labeled "for research use only" are not exempt: that label does not make human use lawful. Human evidence: Preliminary.
Can I buy IGF-1 LR3 in the United States?
No approved product exists to buy. In the United States IGF-1 LR3 is classified as "Not approved; research use only", 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 IGF-1 LR3 FDA approved?
No. FDA status: Not FDA-approved. Current US classification: "Not approved; research use only". Evidence level: Preliminary.
Related compounds in the United States
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for IGF-1 LR3 live on its compound profile.
IGF-1 LR3 profileThis page is general information about the regulatory status of IGF-1 LR3 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.