Legal status · United Kingdom
Is IGF-1 LR3 legal in the United Kingdom?
No. IGF-1 LR3 is not an approved medicine in the United Kingdom; its classification is "Not licensed". 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 Kingdom at a glance
| Classification | Not licensed |
|---|---|
| MHRA approval status | Not approved by MHRA |
| Evidence level | Preliminary (research strength: Moderate) |
| Reviewed | Sep 2026 |
Classification and note come from the IGF-1 LR3 profile, checked against Medicines and Healthcare products Regulatory Agency (MHRA) listings at the reviewed date.
What this means
- 01
No product containing IGF-1 LR3 is approved by MHRA for any use in the United Kingdom, 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 Kingdom. 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 MHRA treats this kind of product
Licenses medicines for the UK market. A compound without a marketing authorisation is an unlicensed medicine, which can only lawfully be supplied for human use through a prescriber under the specials scheme, not sold as a research product.
The classification above is the The Longevity Archive reading of Medicines and Healthcare products Regulatory Agency 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 Kingdom?
No. IGF-1 LR3 is not an approved medicine in the United Kingdom; its classification is "Not licensed". 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 Kingdom?
No approved product exists to buy. In the United Kingdom IGF-1 LR3 is classified as "Not licensed", 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 MHRA approved?
No. In the United Kingdom IGF-1 LR3 is classified as "Not licensed", which is not a MHRA marketing approval. For comparison, the US FDA status is: Not FDA-approved. Evidence level: Preliminary.
Related compounds in the United Kingdom
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 Kingdom, current as of Sep 2026. It is not legal advice, and classifications change; check Medicines and Healthcare products Regulatory Agency 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.