Legal status · United States
Is Foselutoclax legal in the United States?
No. Foselutoclax 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.
Foselutoclax in the United States at a glance
| Classification | Investigational, not approved |
|---|---|
| FDA approval status | Investigational; Phase 2b |
| Evidence level | Moderate (research strength: Moderate) |
| Reviewed | Sep 2026 |
Classification and note come from the Foselutoclax profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
Foselutoclax 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 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 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 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 States?
No. Foselutoclax 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 Foselutoclax in the United States?
No approved product exists to buy. In the United States Foselutoclax 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 Foselutoclax FDA approved?
No. FDA status: Investigational; Phase 2b. 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 Foselutoclax live on its compound profile.
Foselutoclax profileThis page is general information about the regulatory status of Foselutoclax 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.