Thymosin Alpha-1 Dosage Chart & Schedule Guide.
Thymosin Alpha-1 (Tα1) is a naturally occurring thymic peptide that modulates immune function by enhancing T-cell maturation, NK cell activity, and dendritic cell function. The standard clinical dose is 1.6 mg subcutaneously, mirroring the approved Zadaxin protocol.
Half-Life
~2 hrs
Injection
Subcutaneous
Best Timing
AM or PM
Storage
2 – 8 °C
Dosage Protocols
Dose per injection, frequency, and total weekly amount across experience levels.
Syringe units assume a 10 mg vial mixed with 3 mL of bacteriostatic water (3.33 mg/mL). Use the calculator below for your exact setup.
1.6 mg
per injection · 48 units
Frequency
2× / week
Weekly Total
3.2 mg
Cycle Length
4 – 8 weeks
3.2 mg/wk
1.6 mg
per injection · 48 units
Frequency
2× / week
Weekly Total
3.2 mg
Cycle Length
8 – 12 weeks
3.2 mg/wk
1.6 mg daily × 7 days → 2×/wk
per injection · 48 units
Frequency
Daily → 2× / week
Weekly Total
11.2 mg → 3.2 mg
Cycle Length
12 – 16 weeks
11.2 mg → 3.2 mg/wk
Weekly Schedule
Suggested injection days for each protocol. Space doses evenly throughout the week.
| Day | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| beginner | |||||||
| intermediate | |||||||
| advanced |
Advanced protocol: daily for first 7 days (loading), then transitions to 2×/week maintenance.
Thymosin Alpha-1 Reconstitution Calculator
Enter your vial size, how much water you added, and the dose you want — we'll tell you exactly how much to draw.
Double-click a preset to edit it
Double-click a preset to edit it
Double-click a preset to edit it
Standard insulin syringe
Concentration
3.33 mg/mL
Draw volume
0.48 mL
= 1.6 mg ÷ 3.33 mg/mL
Units to draw (1 mL syringe)
48 units
1 mL Syringe
48 IUTips & Notes
Timing
Inject subcutaneously in the morning or evening — consistency matters more than exact time. For 2×/week protocols, space injections 3–4 days apart (e.g., Monday/Thursday).
Cycling
Standard cycles are 8–12 weeks. Clinical hepatitis trials used 6–12 months continuously at 1.6 mg 2×/week with good tolerability. Take 4-week breaks between cycles.
Stacking
Commonly paired with BPC-157 for tissue repair or TB-500 for complementary immune and healing support. No formal stacking studies exist.
Storage
Store lyophilized vials at -20 °C for long-term or 2–8 °C short-term. After reconstitution with bacteriostatic water, refrigerate and use within 7–21 days. Do not freeze reconstituted solution.
Disclaimer: This content is for informational purposes only. Always consult a qualified healthcare professional before starting any new peptide protocol. PeptideDeck is not responsible for individual use.