An immune-signalling peptide your thymus makes — with one of the longest clinical research histories in this catalogue.
Thymosin Alpha-1 doesn’t get the attention the recovery peptides do, but it has something most of them lack: a long, real-world clinical research record. It’s a peptide about the immune system, and that gives it a very different flavour to the rest of the library.
What it is
Thymosin Alpha-1 is a 28–amino-acid peptide originally isolated from the thymus — the small gland behind your breastbone that trains the immune system’s T-cells. It was first identified within a thymus extract decades ago, and the synthetic version is what’s studied today.
What the research looks at
The throughline is immune modulation. Much of the published work explores how Thymosin Alpha-1 influences T-cell function and the body’s broader immune response. Unlike most peptides here, it has been used clinically in a number of countries (under the name Zadaxin) as an immune-supportive agent — studied as an adjunct in contexts ranging from chronic viral infection to vaccine response.
A peptide with genuine clinical mileage behind it is rare in this space — and it’s why Thymosin Alpha-1 is taken seriously as a research tool rather than a curiosity.
Where it sits
It’s the immune specialist of the library — distinct from the repair, metabolic and growth-hormone families, and studied for entirely different questions.
Handling in the lab
Lyophilised powder, reconstituted with bacteriostatic water and kept cold. ≥99% HPLC purity, Janoshik verified — certificate on the product page.
In the catalogue
Thymosin Alpha-1
Stocked in our UK warehouse at ≥99% HPLC purity, Janoshik independently tested.
