Thymosin Alpha 1 prices

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About Thymosin Alpha-1

Source profile reviewed 2026-10-02 · Imported 2026-10-22. Read the full compound profile

Thymosin alpha-1 (thymalfasin) is a 28-amino-acid acetylated peptide originally isolated from thymus tissue that acts through Toll-like receptors on dendritic and other immune cells to promote T-cell maturation and balance cytokine output. Its synthetic form, Zadaxin, is approved in dozens of countries, mainly in Asia, for chronic hepatitis B and as a vaccine or chemotherapy adjunct, and the regimen used in those labels and in most trials is 1.6 mg injected under the skin twice a week; it is not approved in the United States or the European Union. The largest recent trials have been in sepsis, where a 1,106-patient Phase 3 trial published in 2025 found no reduction in 28-day mortality with 1.6 mg every 12 hours for a week.

Formula

C129 H215 N33 O55

Molar mass

3,108.3 g/mol

CAS number

62304-98-7

Amino acids

28

Research evidence described in the source

Limitations noted in the source

• Every amount on this page is a report of what a source describes, not a protocol to follow.
• Preclinical and community rows do not establish a human amount, schedule or route.
• Formulation, purity and presentation vary by supplier and are not covered by the dossier.

Background is reproduced from Peptides Calculator with attribution. The source describes compound-level research. It does not evaluate the identity, quality or suitability of a listed supplier’s product or batch.