Immune Support

Thymosin Alpha-1

Thymosin Alpha-1 (Thymalfasin)

The thymus gland's master immune modulator

Research Status: Approved in 37+ countries (Zadaxin) TA1 Zadaxin Thymalfasin
Mechanism of Action

How it works

Thymosin Alpha-1 activates innate immunity by triggering Toll-like receptor (TLR) signaling, maturation of dendritic cells, and differentiation of Th1 helper T-cells. It upregulates MHC class I expression on tumor cells, improving immune recognition.

Areas of Research

What the research explores

In published research, Thymosin Alpha-1 has been studied in connection with the following. These describe findings reported in the literature — not approved uses, claims, or outcomes to expect.

  • Enhances T-cell maturation and immune competence
  • Improves response to viral infections (HIV, HBV, HCV)
  • Approved in 37+ countries for HBV and HCV
  • Reduces immunosuppression in cancer patients undergoing chemotherapy
  • Potent adjuvant when combined with vaccines
  • Anti-tumor properties via immune sensitization
Safety Profile

Adverse events & gaps

Excellent safety profile across decades of clinical use. Mild administration-site reactions only.



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