Legal status by country
Is PDA with TB-500 legal?
Written by Aaron CuhaReviewed Sep 2026
How PDA with TB-500 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. Marketing the arginate salt under a different name does not change the regulatory position of the sequence. | None recorded | None recorded | None recorded |
US FDA status: Not approved. Pentadeca arginate has never been evaluated by any regulator under that name, and FDA staff reviewing the same peptide sequence as BPC-157 in July 2026 found no adequate human data.. 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.