Legal status · United Kingdom
Is Foselutoclax legal in the United Kingdom?
No. Foselutoclax is not approved for any medical use in the United Kingdom; its classification is "Investigational, not licensed". 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.
Foselutoclax in the United Kingdom at a glance
| Classification | Investigational, not licensed |
|---|---|
| MHRA approval status | Not approved by MHRA; investigational |
| Evidence level | Moderate (research strength: Moderate) |
| Reviewed | Sep 2026 |
Classification and note come from the Foselutoclax profile, checked against Medicines and Healthcare products Regulatory Agency (MHRA) listings at the reviewed date.
What this means
- 01
Foselutoclax is being studied in registered clinical trials but has not received MHRA marketing approval in the United Kingdom.
- 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 Foselutoclax is
The most advanced senolytic in humans: an injected BCL-xL inhibitor that matched the biologic aflibercept on vision at most timepoints in a Phase 2b for diabetic macular edema.
Foselutoclax (Unity Biotechnology) kills senescent cells by blocking BCL-xL, the survival protein those cells depend on. Given as an eye injection, it improved vision by 5 or more letters at weeks 24 and 36 in the ASPIRE Phase 2b and was non-inferior to aflibercept at 9 of 10 timepoints, though investors judged the result mixed.
Mechanism: Inhibition of BCL-xL removes the anti-apoptotic signal senescent cells rely on, inducing their selective death.
Regulatory history: Investigational; Phase 2b
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 Foselutoclax 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.
Foselutoclax in other countries
Frequently asked questions
Is Foselutoclax legal in the United Kingdom?
No. Foselutoclax is not approved for any medical use in the United Kingdom; its classification is "Investigational, not licensed". 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 Foselutoclax in the United Kingdom?
No approved product exists to buy. In the United Kingdom Foselutoclax is classified as "Investigational, 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 Foselutoclax MHRA approved?
No. In the United Kingdom Foselutoclax is classified as "Investigational, not licensed", which is not a MHRA marketing approval. For comparison, the US FDA status is: Investigational; Phase 2b. Evidence level: Moderate.
Related compounds in the United Kingdom
Full research profile
Mechanism, cited studies, FDA status and the full legal summary for Foselutoclax live on its compound profile.
Foselutoclax profileThis page is general information about the regulatory status of Foselutoclax 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.