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Thymosin Alpha-1

A 28-amino-acid thymic peptide used clinically in some countries for immune modulation.

Thymosin Alpha-1 illustration
Reading ingredients on a skincare label

Spotted this on a label?

Thymosin Alpha-1

That’s the INCI name—the official way it appears on the back of your serum or cream. Same ingredient, different marketing names.

Structure (cute edition)

Simplified amino acid chain for Thymosin Alpha-1
2D chemical structure from PubChem ✨ real molecule sketch

This peptide is a short chain of about 4 amino acids—think of it as a tiny protein necklace on your label.

INCI: Thymosin Alpha-1 · ~4 amino acids in our simplified view

What brands say it does

Thymosin alpha-1 enhances T-cell function and is approved in several countries for hepatitis B/C and as an immune adjuvant. It is not FDA-approved for general wellness, but appears in longevity and immune-support protocols. Prescription-grade products differ sharply from research peptides.

Where you’ll find it

Hospital formularies (where approved), immune clinics, and research peptide markets.

Other names you might see

Ta1 Zadaxin Thymalfasin

Educational only—not medical advice. Not prescribing or dosing guidance. Talk to your doctor before starting any peptide protocol.