Warning. Research only: not approved by the FDA for any use in people. Information is for scientific awareness only. Not a recommendation to use, buy or compound.
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100% anonymous · NPI-verifiedFDA status last checked Nov 11, 2026
A synthetic analogue of thymosin-alpha-1, a 28-amino acid protein derived from the precursor protein prothymosin-alpha.
Thymosin alpha-1
Not approved for use in people. Mostly lab or animal research.
Tested in at least one proper controlled study in people, with results.
There is no FDA-approved product with this peptide.
How it works. Proven facts and ideas still being studied are kept apart.
Not yet reviewed.
Tested in at least one proper controlled study in people, with results.
Not FDA-approved. Nominations withdrawn from FDA's 503A category 2 (significant safety risk) list in 2026. Not approved in the US. Not on the 503A bulks list.
Last verified: Nov 11, 2026
Scientific views only. No use in patients or dosing is discussed.
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About the published research. No use in patients or dosing
