Skip to main content
Immune
99%+ Purity

Thymosin Alpha-1

Thymosin Alpha-1

Published: August 29, 2025 Last updated: September 19, 2025 Reviewed by MVP Peptides Editorial Team

Thymosin Alpha-1 is a peptide naturally produced by the thymus gland. It plays a crucial role in immune system regulation and has been approved in many countries for treatment of hepatitis B and C, and as an adjunct to cancer therapy.

Buy Thymosin Alpha-1 at Peptide Palace

Purity

99%+

Molecular Weight

3108 g/mol

Administration

Subcutaneous injection

Storage

Store at 2-8°C

Mechanism of Action

Thymosin Alpha-1 enhances T-cell function, promotes T-cell maturation, and modulates cytokine production. It activates dendritic cells, increases natural killer cell activity, and helps restore immune balance in immunocompromised states.

Sequence:

SDAAVDTSSEITTKDLKEKKEVVEEAEN

Chemical Structure

Chemical structure of Thymosin Alpha-1

Research Areas

  • Hepatitis B and C
  • Cancer immunotherapy
  • Vaccine enhancement
  • Immunodeficiency
  • Sepsis

Potential Benefits

  • Enhanced immune function
  • Improved T-cell activity
  • Vaccine adjuvant effects
  • Antiviral properties
  • Cancer support

Research Dosing Guidelines

For research purposes only. Not for human consumption.

Typical Dose

1.6 mg

Frequency

2 times weekly

Duration

6-12 months for chronic conditions

Administration

Subcutaneous injection

Clinical dosing based on approved uses. Research dosing may vary.

Reconstitution Calculator

mg
mcg
2.0 ml
0.5 ml5 ml

U-100 Insulin Syringe

0102030405060708090100

0.0 units

Concentration

2500 mcg/ml

Inject Volume

0.0004 ml

Syringe Units

0.0 IU

Doses Per Vial

5000

For research and educational purposes only. Always follow proper reconstitution and sterile handling protocols.

Clinical Applications of Thymosin Alpha-1

Thymosin Alpha-1 stands apart from most research peptides because it has achieved regulatory approval in over 35 countries, primarily for hepatitis treatment and immune reconstitution.

Approved and Investigational Uses

ApplicationStatusKey Evidence
Hepatitis BApproved (multiple countries)Improved viral clearance and seroconversion rates
Hepatitis CApproved (adjunct therapy)Enhanced sustained virologic response when combined with IFN
Cancer immunotherapyInvestigationalImproved immune response when combined with chemotherapy
Vaccine adjuvantInvestigationalEnhanced antibody response in immunocompromised patients
SepsisInvestigationalReduced mortality in severe sepsis when added to standard care

Its established clinical safety profile across decades of use in hepatitis treatment makes Thymosin Alpha-1 one of the most evidence-supported immune peptides available for research.

Potential Side Effects

  • Injection site reactions
  • Transient fever (rare)
  • Generally very well tolerated

Storage Requirements

Store at 2-8°C.

Research References

  • [1]
    Thymosin α1 and Immune Response (2021)
    Preclinical Population: Clinical studies in hepatitis, cancer, and immunodeficiency patients

    Thymosin alpha-1 enhanced T-cell differentiation, dendritic cell activation, and natural killer cell cytotoxicity across multiple disease states.

    Limitations: Heterogeneous study populations and dosing protocols

  • [2]
    Safety and Efficacy of Thymosin Alpha 1 in Clinical Trials (2024)
    Strong Evidence Population: Pooled clinical trial data across multiple countries

    Systematic review confirmed thymosin alpha-1 as safe and efficacious for hepatitis B treatment and immune reconstitution.

    Limitations: Publication bias toward positive results; need for standardized endpoints

Frequently Asked Questions

What is Thymosin Alpha-1?

Thymosin Alpha-1 is a peptide naturally produced by the thymus gland that plays a crucial role in immune system regulation. It has been approved in many countries for the treatment of hepatitis B and C and as an adjunct to cancer immunotherapy.

What are the potential research benefits of Thymosin Alpha-1?

Research indicates Thymosin Alpha-1 may enhance immune function by promoting T-cell maturation, increasing natural killer cell activity, and modulating cytokine production. It also shows promise as a vaccine adjuvant and in supporting immunocompromised states.

How is Thymosin Alpha-1 typically dosed in research?

Thymosin Alpha-1 is typically administered at 1.6 mg via subcutaneous injection twice weekly. For chronic conditions, research protocols may extend for 6-12 months, with dosing based on established clinical guidelines.

What are the side effects of Thymosin Alpha-1?

Thymosin Alpha-1 is generally very well tolerated in research and clinical settings. Potential side effects are minimal and may include injection site reactions and rare transient fever.

How should Thymosin Alpha-1 be stored?

Thymosin Alpha-1 should be stored at 2-8°C to maintain its biological activity and stability. Standard cold chain storage practices should be followed to ensure optimal peptide integrity.

Ready to Purchase Thymosin Alpha-1?

Get the highest quality Thymosin Alpha-1 from our recommended vendor with 99%+ purity guaranteed.

Buy at Peptide Palace

Related Peptides

BPC-157

Body Protection Compound-157

BPC-157 is a pentadecapeptide composed of 15 amino acids. It is a partial sequence of body protection compound (BPC) that is discovered in and isolated from human gastric juice. Research has shown it accelerates the healing of many different wounds, including tendon-to-bone healing and superior healing of damaged ligaments.

Learn More

LL-37

Cathelicidin Antimicrobial Peptide LL-37

LL-37 is the only cathelicidin-derived antimicrobial peptide found in humans. It is a 37-amino-acid peptide cleaved from the C-terminal end of the human cathelicidin protein hCAP18. LL-37 plays a central role in innate immune defense against bacterial, viral, and fungal infections.

Learn More