Thymosin Alpha 1 Guide (2026)
Complete Guide & Evidence (2026)
FDA-orphan-drug designated immune modulator. Enhances T-cell function, NK cell activity, and dendritic cell maturation.
Thymosin Alpha-1 Immune Modulation
Innate Immunity
Activates dendritic cells and NK cells. Upregulates TLR (Toll-like receptor) signaling. Enhances first-line pathogen response
Adaptive Immunity
Promotes Th1 over Th2 immune polarization. Enhances CD4+ and CD8+ T-cell activity. Improves vaccine antigen presentation
Cytokine Regulation
Upregulates IL-2, IFN-ฮณ, IFN-ฮฑ production. Reduces immunosuppressive IL-10 in cancer contexts. Reduces NF-ฮบB-driven inflammation
Clinical Record
Countries where Zadaxin (thymosin alpha-1) is approved for hepatitis B/C treatment.
Subcutaneous dose per injection โ approved Zadaxin dosing unit for hepatitis.
Decades of clinical use in hepatitis B/C, cancer adjuvant, and immunodeficiency contexts.
Applications
Clinical / Approved
Chronic Hepatitis B โ first-line and adjunct to antiviral. Chronic Hepatitis C โ adjunct to interferon therapy. Cancer โ immune adjuvant during chemotherapy. COVID-19 โ immune modulator (used in China
Research / Off-Label
Immune senescence in aging โ restoring thymic function. Chronic Lyme and mold illness โ immune modulation. Post-viral fatigue and Long COVID. Vaccine adjuvant โ improving antibody response
Thymosin Alpha-1 Protocol
Safety note: Thymosin alpha-1 has an excellent safety record from decades of Zadaxin clinical use. Common stacks include LL-37 (antimicrobial synergy) and BPC-157 (gut-immune axis support). Track all immune markers and energy in the Shotlee app.
Vital Protocol FAQs
What is thymosin alpha-1?
Thymosin alpha-1 (Tฮฑ1) is a 28-amino acid peptide naturally produced by the thymus gland. It is the active ingredient in Zadaxin, an FDA-approved biological for hepatitis B in several countries. Tฮฑ1 m
What conditions is thymosin alpha-1 used for?
Clinically, thymosin alpha-1 (Zadaxin) is approved in 35+ countries for chronic hepatitis B, hepatitis C (adjunct to interferon), and as an immune adjuvant in cancer chemotherapy. It was used in China
What is the thymosin alpha-1 dosing protocol?
The FDA/EMA-approved Zadaxin dose for hepatitis is 1.6 mg subcutaneous twice weekly for 6โ12 months. Biohacking protocols typically use 1.6 mg subcutaneous twice weekly or 1.6 mg 3ร per week during ac
Is thymosin alpha-1 the same as thymalin?
No. Thymosin alpha-1 (Tฮฑ1) and thymalin are different thymic peptides with overlapping but distinct effects. Thymalin is a polypeptide extract from bovine thymus, primarily studied in Russian aging re
Guide FAQs
FDA-orphan-drug designated immune modulator. Enhances T-cell function, NK cell activity, and dendritic cell maturation.
Yes. Shotlee supports tracking Thymosin Alpha 1 doses, side effects, and health metrics. It is free to use.
References
- [1]ReviewTuthill C et al. Thymalfasin: biological properties and clinical applications. Int Immunopharmacol. 2020;85:106580.
- [2]ReviewGaraci E et al. Thymosin alpha 1: from bench to bedside. Ann N Y Acad Sci. 2007;1112:225-234.
- [3]Clinical TrialAndreone P et al. Thymosin alpha 1 plus interferon alpha for naive patients with chronic hepatitis C: results of a randomized controlled pilot trial. J Viral Hepat. 2004;11(1):69-73.
- [4]Clinical TrialLiu Y et al. Thymosin alpha 1 (Talpha1) reduces the mortality of severe COVID-19 by restoration of lymphocytopenia and reversion of exhausted T cells. Clin Infect Dis. 2020;71(16):2150-2157.
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