Legal status by country
Is 17-alpha-estradiol legal?
Written by Aaron CuhaReviewed Sep 2026
How 17-alpha-estradiol 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 | No approval for any indication. The lifespan evidence is entirely in mice fed the compound in their diet. | Topical preparations for hair loss exist in some European markets; no systemic indication. | None recorded | None recorded |
US FDA status: Not approved in the United States for any indication. Marketed in some European countries as a topical preparation for androgenetic alopecia, which is a different use, route and dose from the lifespan work.. 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.