Thymosin Alpha-1 — the immune modulator.
Thymosin Alpha-1 (Tα1) is a 28-amino acid peptide naturally produced by the thymus gland. It is an approved drug in over 30 countries (as Zadaxin) for immune-related conditions, making it one of the better-validated peptides in this category.
What is Thymosin Alpha-1?
Thymosin Alpha-1 is a naturally occurring thymic peptide central to T-cell maturation and immune regulation. It enhances the function of immune cells (T-cells, dendritic cells, NK cells) and modulates inflammatory responses. It is approved as Zadaxin in many countries for hepatitis B/C, as a vaccine adjuvant, and as an immune support agent — though not approved in the EU or US.
What does the research show?
What to look for when buying in Europe
Among the better-validated peptides clinically. Research-grade Tα1 should be ≥98% HPLC with mass-spec confirmation. PeptideCompare tracks several EU vendors.
Molecular information
Pharmacokinetics
Compare Thymosin Alpha-1 across EU suppliers
7 EU vendors · COA-verified · from €30.19 · Updated monthly