Home › Compound Library › Immune & Anti-Aging › Thymosin Alpha-1
Immune & Anti-Aging Research High Evidence

Thymosin Alpha-1

Naturally occurring thymus-derived peptide. FDA-approved (Zadaxin) in 35+ countries. Most studied immune-modulating peptide with decades of clinical data in infectious disease and oncology.

immunethymusT-cellNK cellFDAinfectious diseasecancerCOVID
Half-life
~2 hours
SKUs Available
2
Evidence Level
High Evidence
Mechanism of Action

Activates T-cell maturation and differentiation. Enhances NK cell activity, dendritic cell function, and antigen presentation. Modulates TH1/TH2 balance. Promotes thymic output.

Published Research Ranges & Study Context

Studies have administered: 1.6mg 2x weekly (approved dose in clinical use)

Important Research Framing These are ranges reported in published scientific studies. They are provided for educational context only and do not constitute dosing recommendations. Individual study parameters vary by design, population, and research objectives. This information is not medical advice.
Primary Research Findings

Decades of human clinical data. Approved for hepatitis B/C, AIDS, cancer adjunct therapy in multiple countries. COVID-19 trials showed mortality reduction in severe cases (multiple Chinese RCTs).

High Evidence Multiple large human RCTs available
Side Effects Observed in Research

Extremely well-tolerated over decades of use; injection site reactions; rare transient flu-like symptoms

Available Configurations (SKU Reference)
TA5 TA10
Compounds Studied in Combination

These compounds have been examined together in research literature. Combination use is not endorsed or recommended — this information is provided for research context only.

Want a Complete Research Monograph?

Our AI can generate a 2,000+ word deep-dive on Thymosin Alpha-1 — including full clinical trial summaries, pharmacokinetics, and research frontiers.

Generate Deep Dive in Research Chat
Research Education Only: This compound profile is for educational purposes only. All information is sourced from published scientific literature. This is not medical advice. Not for human consumption. Consult qualified medical professionals for any health decisions. Regulatory status varies by jurisdiction.