Immune / healingEvidence: approved in some regionsApproved in some countries · RUO in US
Approved drug — used here for education. This is an approved/prescription medicine in at least one region; "research"/compounded versions sold as chemicals are a separate, riskier thing. Not medical advice.
What it is
Thymosin alpha-1 (Tα1) is a 28-amino-acid immune-modulating peptide derived from the thymus.
Proposed mechanism
It enhances T-cell and dendritic-cell function and modulates innate immunity — studied in infections, sepsis and as a vaccine adjuvant.1
State of the evidence
Approved/marketed (as Zadaxin) in a number of countries for certain infections; not FDA-approved in the US, where it is sold RUO.
Regulatory & status
Approval varies by region; RUO in the US.
Reconstitution (reference only)
Lab-handling reference only — not a preparation or dosing instruction: 2 mL (200 units) reconstitution solution. See the reconstitution calculator for the arithmetic. This page does not provide dosing guidance.
For educational and research purposes only. This content is not medical advice. Compounds referenced are research use only and not intended to diagnose, treat, cure, or prevent any disease. Free Peptide University does not sell compounds.