Legal status by country
Is ISRIB legal?
Written by Aaron CuhaReviewed Sep 2026
How ISRIB 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 only as a research chemical. No approval, no registered human trial, no human pharmacokinetic data. Taking it is not off-label use of a medicine, because there is no medicine. | No MHRA authorisation and no UK clinical trial. | Not registered on the ARTG. | No Health Canada authorisation. |
US FDA status: Not approved for any indication in any country. No registered clinical trial of ISRIB itself exists. A separate eIF2B activator, fosigotifator, is in clinical development for vanishing white matter disease, and two of its trials have been terminated.. 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.