Legal status by country
Is Semax with selank and dihexa legal?
Written by Aaron CuhaReviewed Sep 2026
How Semax with selank and dihexa is classified in the United States, United Kingdom, Australia and Canada, side by side. Each country has its own page with a direct answer, the regulator's approval status and what the classification means in practice.
All four countries, side by side
| Attribute | United States · FDA | United Kingdom · MHRA | Australia · TGA | Canada · Health Canada |
|---|---|---|---|---|
| Status | Not approved | Not approved | Not approved | Not approved |
| Classification | Not approved; research use only | Not licensed | Not approved | Not approved |
| Note | Sold research use only. None is an approved drug or a lawful dietary ingredient. | Unlicensed medicines; supply for human use is unlawful. | None recorded | None recorded |
US FDA status: None of the three is approved in the United States. Semax and selank hold registrations in Russia; dihexa has never been approved anywhere and never completed clinical development.. Reviewed Sep 2026.
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General information current as of Sep 2026, not legal advice. Classifications change; confirm with the regulator or 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.