Legal status · United States
Is Orexin-A legal in the United States?
No. Orexin-A is not an approved medicine in the United States; its classification is "Not approved; sold 'for 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.
Orexin-A in the United States at a glance
| Classification | Not approved; sold 'for research use only' |
|---|---|
| FDA approval status | Not approved |
| Evidence level | Preliminary (research strength: Preliminary) |
| Reviewed | Sep 2026 |
Classification and note come from the Orexin-A profile, checked against U.S. Food and Drug Administration (FDA) listings at the reviewed date.
What this means
- 01
No product containing Orexin-A 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 Orexin-A is
The wakefulness neuropeptide, sold as a nasal spray for alertness after a primate study showed intranasal delivery reversed sleep-deprivation deficits; no human efficacy trial exists and approved narcolepsy drugs use small molecules instead.
Orexin-A regulates arousal through OX1R and OX2R receptors, and its loss causes narcolepsy. In a well-designed 2007 study, nasal orexin-A restored cognitive performance in sleep-deprived monkeys better than intravenous dosing.
Mechanism: Agonism of hypothalamic orexin receptors OX1R and OX2R promoting wakefulness and arousal.
Regulatory history: Not 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 Orexin-A 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.
Orexin-A in other countries
Frequently asked questions
Is Orexin-A legal in the United States?
No. Orexin-A is not an approved medicine in the United States; its classification is "Not approved; sold 'for 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 Orexin-A in the United States?
No approved product exists to buy. In the United States Orexin-A is classified as "Not approved; sold 'for 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 Orexin-A FDA approved?
No. FDA status: Not approved. Current US classification: "Not approved; sold 'for 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 Orexin-A live on its compound profile.
Orexin-A profileThis page is general information about the regulatory status of Orexin-A 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.