Thymosin Alpha-1 Reconstitution & Dosing
Also known as: Tα1, Zadaxin
Quick answer: mix a 5 mg vial of Thymosin Alpha-1 with 2 ml of bacteriostatic water. That gives 2.50 mg/ml, so a typical 1.6 mg dose is 64 units on a U-100 insulin syringe — about 3 doses per vial. Reported protocols range 450 mcg–1.6 mg, 2x weekly.
Thymosin Alpha-1 is a thymic peptide approved in several countries as an immune stimulant (Zadaxin) for hepatitis and as a vaccine adjuvant. The clinically studied dose is 1.6 mg twice weekly. Full overview: what is Thymosin Alpha-1? →
Calculate your exact dose
Typical range: 450 mcg–1.6 mg, 2x weekly
Thymosin Alpha-1 mixing chart — 5 mg vial
Units to draw for a 1.6 mg dose at different water amounts. More water never changes the dose — only the volume you measure.
| Water added | Concentration | 1.6 mg dose = | Per unit |
|---|---|---|---|
| 1 ml | 5.00 mg/ml | 32 units | 50.0 mcg |
| 2 ml ← typical | 2.50 mg/ml | 64 units | 25.0 mcg |
| 2.5 ml | 2.00 mg/ml | 80 units | 20.0 mcg |
| 3 ml | 1.67 mg/ml | 96 units | 16.7 mcg |
| 5 ml | 1.00 mg/ml | 160 units (>1 syringe) | 10.0 mcg |
Protocol reference
FAQ
How much bacteriostatic water do you add to Thymosin Alpha-1?+
Most protocols mix a 5 mg vial of Thymosin Alpha-1 with 2 ml of bacteriostatic water. This gives 2.50 mg/ml, so a typical 1.6 mg dose is 64 units on a U-100 insulin syringe. More or less water is fine — it only changes the volume you draw, not the dose.
What is a typical Thymosin Alpha-1 dose?+
Commonly reported Thymosin Alpha-1 protocols use 450 mcg to 1.6 mg, 2x weekly, administered via subcutaneous injection. These are reference figures from published protocols, not medical advice — individual use should be guided by a healthcare provider.
How many doses are in a 5 mg vial of Thymosin Alpha-1?+
At 1.6 mg per dose, a 5 mg vial contains about 3 doses, regardless of how much water you add.
How should Thymosin Alpha-1 be stored?+
Reconstituted: refrigerate, typically used within 4 weeks.
Related peptides
Educational reference only. Values reflect commonly published research protocols and are not medical advice or a recommendation to use any compound. Thymosin Alpha-1 may not be approved for human use in your jurisdiction.