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Thymosin Alpha-1 — dosage, half-life & reference guide

Healing & recovery peptide · also known as Tα1, Thymalfasin, Zadaxin

A naturally occurring thymic peptide that strengthens and fine-tunes your immune system. It boosts T-cell maturation, increases natural killer cell activity, and has antiviral properties. One of the few peptides with established clinical use — it's been approved in some countries for hepatitis treatment.

Commonly-researched dose ranges

Thymosin Alpha-1 is commonly researched at 1–1.6 mg, 2x/week, by SubQ injection. These are reference ranges from the literature and community use, not a prescription.

Half-life

Estimated half-life: ~2 hours. See how it accumulates in the half-life calculator.

Safety & interactions

Commonly reported effects: injection site reaction, fatigue, mild flu-like symptoms. Discuss with your clinician.

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