IMMUNE · DOSAGE CALCULATOR
Thymosin Alpha-1 Dosage Calculator
Thymosin alpha-1 is dosed in milligrams, typically twice a week. Enter your vial, water, and prescribed dose to see the draw.
INPUT VALUES
Peptide vial size
10 mg
Total Thymosin Alpha-1 in your vial
Bacteriostatic water
2 mL
Amount of BAC water added
Desired dose
1.6 mg
The approved thymalfasin dose in most markets is 1.6 mg twice weekly.
RESULT · AUTO-CALCULATED
Draw to
units on a U-100 insulin syringe · 0.32 mL
- Concentration
- 5000 mcg/mL
- Volume per dose
- 0.32 mL
- mcg per unit
- 50 mcg
- Doses per vial
- 6
Educational only. Reconstitution math is provided to help you follow the instructions from your prescribing provider — it is not a dosing recommendation. Always use the dose your provider prescribed.
About Thymosin Alpha-1 dosing
Thymosin alpha-1 (thymalfasin, marketed as Zadaxin outside the US) is a 28-amino-acid peptide originally isolated from the thymus. It is approved in dozens of countries as an immune modulator and studied for infection, vaccine response, and immune support during illness.
From a 10 mg vial in 2 mL (5 mg/mL), a 1.6 mg dose is 0.32 mL — 32 units — and the vial holds six doses, three weeks at twice weekly. G1 sells 10 and 20 mg vials.
Your G1 provider sets the dose and schedule; this calculator converts that dose into a syringe measurement.
What is the standard thymosin alpha-1 dose?
The approved regimen is 1.6 mg subcutaneously twice weekly. Some protocols use 1.5 mg or a 3.2 mg loading dose. Your provider sets what applies to you.
How long can reconstituted thymosin alpha-1 be stored?
Refrigerated, within the beyond-use window from your pharmacy — commonly up to 28 days. At twice-weekly dosing a 10 mg vial is used within three weeks.
How many units is 1.6 mg of thymosin alpha-1?
32 units with 10 mg in 2 mL; 16 units with 20 mg in 2 mL; 48 units with 10 mg in 3 mL. The calculator shows your exact number.
AVAILABLE AT G1
Thymosin Alpha-1 is prescribed through G1.
A free telehealth consultation with a licensed provider, a prescription written for you, and pharmaceutical-grade vials shipped cold-chain to your door.
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