Thymosin Alpha-1 dose guide

A peptide dosage chart, one peptide at a time: its dose range, how often it’s taken, a typical run and the units on your syringe. All 69 peptides in the PepVault library.

A community reference, not medical advice. Each range is what has been studied or is commonly run, never a dose for you.

Thymosin Alpha-1 dosage

A naturally occurring thymic peptide that fine-tunes the immune system: it helps T-cells mature and raises natural killer cell activity. Commonly reported: fewer or shorter colds over a season, with little to feel day to day. It's a prescription drug (thymalfasin) in about 35 countries, mainly for hepatitis B, though not in the US, and trial results are mixed.

Dose range
1–1.6 mg (research range). Studied in research — not a recommendation.
How often
2× weekly: 2x/week
A typical run
Community cycles typically run 4–6 weeks, 2x/week, or as needed for immune support. The hepatitis B trials ran far longer: 1.6 mg twice a week for 26 or 52 weeks (Chien 1998).
How it’s taken
Vial: SubQ injection
Evidence
Established: Clinical trials or FDA-approved use exists
Half-life
~2 hours (Zadaxin label, after a SubQ dose)

Thymosin Alpha-1 on your syringe

With a 10 mg vial and 2 mL of water (5 mg in every mL), on a 0.5 mL (50-unit) U-100 insulin syringe: the low end, 1 mg, is 20 units; and the high end, 1.6 mg, is 32 units. 10 doses in the vial at the low end. All U-100: 100 units to the mL. A U-40 syringe reads differently.

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A community reference, not medical advice. Each range is what has been studied or is commonly run, never a dose for you.