Is Thymosin Alpha-1 an approved drug?

Yes. As Zadaxin it is approved in many countries for hepatitis B and C and used as an immune adjuvant, though it is not FDA-approved in the United States.

How does Thymosin Alpha-1 'balance' the immune system?

It modulates T-cell maturation and cytokine production through Toll-like receptor signaling, which can enhance weak immune responses while helping dampen excessive inflammation.

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Immune

Clinical

Thymosin Alpha-1

Also known as: Thymosin Alpha-1, Ta1, Zadaxin

A thymus-derived immunomodulating peptide approved in many countries (as Zadaxin) for hepatitis and as an immune adjuvant. Studied for restoring and balancing immune function.

Mechanism of Action

Thymosin Alpha-1 is a 28-amino-acid peptide that enhances T-cell maturation and function, promotes differentiation of T-helper cells, and stimulates dendritic cell and natural killer cell activity. It signals partly through Toll-like receptors (notably TLR9 and TLR2), augmenting both innate and adaptive immunity. By modulating cytokine production, it can help normalize over- or under-active immune responses.

Half-life: Approximately 2 hours
Administration Routes: subcutaneous
Research Status: Clinical