Thymosin Alpha-1
Also known as: Thymalfasin · Zadaxin · Ta1 · Tα1
Thymosin Alpha-1 modulates innate and adaptive immunity through multiple mechanisms. It stimulates dendritic cell maturation and antigen presentation, enhances T helper cell (Th1) responses, and promotes cytotoxic T lymphocyte (CTL) activity against virally infected or cancerous cells. It activates natural...
What It Is
Thymosin Alpha-1 modulates innate and adaptive immunity through multiple mechanisms. It stimulates dendritic cell maturation and antigen presentation, enhances T helper cell (Th1) responses, and promotes cytotoxic T lymphocyte (CTL) activity against virally infected or cancerous cells. It activates natural killer (NK) cells and increases production of interferon-gamma, IL-2, and IL-12. TA1 binds Toll-like receptor 9 (TLR9) to stimulate innate immune responses. In chronic viral infections (hepatitis B, C, HIV), TA1 reverses T-cell exhaustion and restores immunocompetence. It also increases dendritic cell MHC II expression for improved antigen presentation.
Supplies Needed
Reconstitution solvent
Subcutaneous injection
Sterilization
Storage
Store at 2-8C (refrigerator). Do not freeze Zadaxin brand. Research peptide stable at -20C for 2 years.
Refrigerate at 2-8C; use within 24-48 hours (Zadaxin) or within 30 days (bacteriostatic water reconstitution).
This information is provided for educational and research purposes only. Not approved for human consumption by the FDA or any regulatory body. Always consult a qualified medical professional.
Dosing Protocols
Timing: Any time; consistent schedule. Standard Zadaxin dose; use for immune support during illness or infection
↓ Apply these values to the reconstitution calculatorTiming: Any time. Established clinical dose from Zadaxin trials; longer courses for chronic viral infections
↓ Apply these values to the reconstitution calculatorTiming: Any time. Double dose for severe immunocompromise or cancer adjuvant therapy; used in clinical protocols
↓ Apply these values to the reconstitution calculatorWeekly Timeline
| Week | Expected Effects |
|---|---|
| Week 1 | Early immune activation; possible mild flu-like response as T-cells are mobilized |
| Week 2 | Improved NK cell activity; enhanced antigen presentation; reduced fatigue |
| Week 4 | Measurable improvement in immune markers; improved response to pathogens |
| Week 12 | Significant immune reconstitution in immunocompromised individuals; improved viral clearance |
Reconstitution Calculator
1 unit on U-100 syringe = 0.01 mL · Always label your vial after reconstitution
Injection Technique & Reconstitution
- Remove flip-top cap from the vial
- Swab rubber stopper with alcohol swab
- Draw 1 mL sterile water or bacteriostatic water
- Inject slowly down the vial wall
- Gently swirl until dissolved
- Label with reconstitution date; refrigerate at 2-8C
Use our free peptide dosage calculator to get the exact syringe units for your vial size and dose.
Mechanism of Action
Thymosin Alpha-1 modulates innate and adaptive immunity through multiple mechanisms. It stimulates dendritic cell maturation and antigen presentation, enhances T helper cell (Th1) responses, and promotes cytotoxic T lymphocyte (CTL) activity against virally infected or cancerous cells. It activates natural killer (NK) cells and increases production of interferon-gamma, IL-2, and IL-12. TA1 binds Toll-like receptor 9 (TLR9) to stimulate innate immune responses. In chronic viral infections (hepatitis B, C, HIV), TA1 reverses T-cell exhaustion and restores immunocompetence. It also increases dendritic cell MHC II expression for improved antigen presentation.
Key Research Papers
Meta-analysis confirming significant improvement in sustained virological response in chronic hepatitis B and C patients treated with Thymosin Alpha-1.
View on PubMed →Demonstrated Thymosin Alpha-1 activation of dendritic cells via TLR9 signaling, enhancing anti-tumor cytotoxic T lymphocyte responses.
View on PubMed →Stacks Well With
Longevity and immune optimization stack - Epithalon addresses cellular aging while Thymosin Alpha-1 maintains immune competence, both critical for healthy aging.
Comprehensive immune support - Thymosin Alpha-1 modulates adaptive immunity while LL-37 provides innate antimicrobial protection.
Recovery stack during illness - BPC-157 supports tissue repair while Thymosin Alpha-1 enhances immune clearance of infection.
Frequently Asked Questions
Thymosin Alpha-1 is used to enhance immune function, treat chronic viral infections (hepatitis B and C), as a cancer treatment adjuvant, and for longevity immune optimization. It is approved as Zadaxin in over 35 countries.
Thymosin Alpha-1 is approved in over 35 countries (Zadaxin) but is not FDA approved in the US. It was used under compassionate use protocols during COVID-19 in some countries.
Immune improvements are measurable within 2-4 weeks of starting treatment. For chronic viral infections, the full treatment course (6-12 months) is required for sustained immune reconstitution.
Legal Status by Region
This information is provided for educational and research purposes only. Not approved for human consumption by the FDA or any regulatory body. Always consult a qualified medical professional.