Thymalin (Thymus Extract)

Thymic Peptide Bioregulator | Immune Modulator

Weight: Variable (peptide complex)

Half-life: Not established (complex mixture); effects persist for weeks

4 studies

2021 latest

Well Studied

Dose 10mg per injection

Frequency Daily for 5-10 days, then break

Cycle 5-10 day cycles (short bioregulator protocol)

Storage Reconstituted: 2-8°C refrigerated

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Thymalin is a natural peptide bioregulator derived from calf thymus gland, developed in the Soviet Union in the 1970s. It contains a mixture of thymic peptides that support immune restoration, anti-aging, and tissue regeneration. Research spanning decades has shown significant geroprotective effects, with studies demonstrating up to 2-fold reduction in mortality rates and 4-fold reduction when combined with Epithalamin.

Mechanism of Action

Thymalin's immunoprotective action stems from short peptides (KE, EW, EDP) that specifically bind to double-stranded DNA and histone proteins to regulate gene expression. It stimulates differentiation and activity of T-lymphocytes, especially CD4+ and CD8+ cells, promotes cytokine regulation, enhances antigen response, and stimulates stem cell differentiation. It also affects gerontogene activity and immune system protein synthesis.

01 Potent immune system restoration and modulation

02 Significant geroprotective (anti-aging) effects

03 Reduced mortality rate in clinical studies (2.0-2.1 fold)

04 Normalized cardiovascular, endocrine, and nervous system function

05 Reduced acute respiratory disease incidence (2.0-2.4 fold)

06 Enhanced T-lymphocyte differentiation (CD4+, CD8+)

07 Antitumor effects in animal studies

08 Safe for elderly populations with no side effects

Molecular Data

Molecular Weight

Variable (peptide complex)

Type

Polypeptide mixture

Research Indications

Immune Support

Immune Restoration most effective

Stimulates T-lymphocyte differentiation and activity for comprehensive immune system restoration.

Lymphopenia Recovery most effective

Accelerates recovery of lymphocyte populations including CD4+, CD3+HLA-DR+, B-cells, and NK-cells.

Respiratory Illness Prevention effective

2.0-2.4 fold reduction in acute respiratory disease incidence in elderly patients.

Longevity

Mortality Reduction most effective

Clinical studies showed 2.0-2.1 fold mortality reduction over 6-8 years in treated elderly.

Geroprotection effective

Normalizes basic body functions and improves cardiovascular, endocrine, immune, and nervous systems.

Combined Protocol most effective

When combined with Epithalamin for 6 years, mortality decreased 4.1 times vs control.

Therapeutic Applications

COVID-19 Support effective

Faster reversal of lymphopenia and immune marker recovery in severe COVID-19 patients.

Antitumor Effects moderate

Tumor growth arrest and regression observed in over half of animals in sarcoma studies.

Thymus Normalization effective

Normalizes thymus function during aging process.

Dosing Protocols

Administered via intramuscular or subcutaneous injection in short 5-10 day cycles. Often combined with other bioregulators like Epitalon or Vilon for enhanced systemic effects. Practically no side effects, safe for elderly populations.

Goal	Dose	Frequency	Route
Immune restoration	10 mg	Daily	IM or SubQ
Standard cycle	10 mg	Daily for 5-10 days	IM or SubQ
Maintenance	10 mg	1-2x yearly cycles	IM or SubQ
With Epithalamin	10 mg each	Annual cycles	IM or SubQ

Reconstitution Instructions

Materials Needed:

Bacteriostatic water or sterile water
Insulin syringes (1 mL)
Alcohol swabs
Peptide vial
Sterile work surface

1 Clean work area and hands thoroughly
2 Calculate required water volume
3 Draw water into syringe
4 Inject slowly down vial side
5 Gently swirl until dissolved (never shake)
6 Store in refrigerator

Interactions

Epitalon

Combined use showed 4.1-fold mortality reduction vs 2.0-fold with Thymalin alone.

synergistic

Vilon

Often used together for enhanced systemic recovery and immune support.

synergistic

Thymosin Alpha-1

Similar thymic origin; different mechanisms can complement each other.

compatible

BPC-157

No known negative interactions; different mechanisms.

compatible

What to Expect

Days 1-5

Initial immune modulation begins

Days 5-10

T-cell activation and differentiation enhanced

Week 2-4

Improved immune markers on blood tests

Month 1-3

Reduced illness frequency

Long-term (years)

Geroprotective benefits with annual cycles

Side Effects & Safety

Common Side Effects

Injection site reactions (mild)
Practically no side effects reported

Stop Signs - Discontinue if:

Signs of allergic reaction
Unusual immune responses

Contraindications

Autoimmune diseases (use with caution)
Organ transplant recipients (immunosuppression needed)
Pregnancy or breastfeeding
Known hypersensitivity

Quality Checklist

Good Signs

White to off-white lyophilized powder
Clear solution after reconstitution
Intact vacuum seal

Warning Signs

Slight clumping that dissolves easily

Bad Signs

Discolored powder
Cloudy or particulate solution
Broken seal

References

The Use of Thymalin for Immunocorrection and Molecular Aspects of Biological Activity

International Journal of Molecular Sciences (2021)

Detailed molecular mechanisms of Thymalin's immunoprotective action through peptides KE, EW, EDP binding to DNA and histones.
Peptides of Pineal Gland and Thymus Prolong Human Life

Neuroendocrinology Letters (2003)

6-8 year study showed 2.0-2.1 fold mortality reduction with Thymalin; 4.1-fold when combined with Epithalamin.
Peptide Drug Thymalin Regulates Immune Status in Severe COVID-19 Older Patients

Advances in Gerontology (2021)

Faster lymphopenia reversal and improved recovery of CD4+, CD3+HLA-DR+, B-cells, and NK-cells in COVID-19.
Effect of Thymalin on Tumor and Thymus in Activation Therapy

Bulletin of Experimental Biology and Medicine (2018)

Antitumor effects with tumor growth arrest in >50% of animals; growth suppressed by 78% in others.

Disclaimer

This information is for educational and research purposes only. Consult a healthcare professional before use.