What is the difference between Thymalin and Vilon?

Thymalin: Thymic peptide bioregulator; restores thymic function and T-cell production; modulates cytokine balance; shown to extend lifespan in animal models Vilon: Synthetic dipeptide Lys-Glu; modulates T-cell and NK cell activity; reduces age-related immune decline; normalizes cytokine production via epigenetic gene regulation

Is Thymalin FDA approved?

Thymalin is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

Is Vilon FDA approved?

Vilon is not evaluated or approved by the FDA. It is discussed for research and educational purposes only, not as medical guidance.

How is Thymalin administered in research settings?

In research settings, Thymalin is typically administered via the subcutaneous or intramuscular routes. PeptideBase does not provide dosing or administration instructions.

How is Vilon administered in research settings?

In research settings, Vilon is typically administered via the subcutaneous or intramuscular routes. PeptideBase does not provide dosing or administration instructions.

Home›Research›Compare›Thymalin vs Vilon

Peptide Comparison

Thymalin vs Vilon

Name: Thymalin vs Vilon — Per-mg Price Comparison
Creator: PeptideBase
License: https://peptidebase.io/terms

Both are Immune & Thymic peptides.

Thymalin

Thymus peptide

LongevityNot EvaluatedResearch Only

Half-life: Unknown

12 providers listed

Full Thymalin profile →

Vilon

Lys-Glu

LongevityNot EvaluatedResearch Only

Half-life: Unknown

3 providers listed

Full Vilon profile →

Bottom line

Thymalin is carried by more providers on PeptideBase (12 vs 3); otherwise the two are closely matched on the measures we track.

Quick Verdict

Thymalin

Vilon

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Thymalin
Lower typical price per mg	Vilon
More provider options (12 vs 3)	Thymalin

Research summary only — not medical advice. Consult a qualified provider before making any decisions.

Side-by-Side Comparison

Thymalin

Vilon

Mechanism Family

Immune & Thymic

Half-life

Unknown

FDA Status

not evaluated

Admin Routes

subcutaneous, intramuscular

Availability

Research Only

Providers

12 listed

3 listed

Avail. Notes

Russian thymic peptide bioregulator (Khavinson Institute). Distinct from Thymosin Alpha-1. Not FDA-approved. Not on any FDA list. Research chemical in US.

Russian dipeptide bioregulator (Lys-Glu) from Khavinson Institute. Immunomodulatory and longevity research. Not FDA-approved. Not on any FDA list. Research chemical in US.

Research Evidence

Thymalin

Review · 5 key studies · most recent 2023

Vilon

Animal · 1 key study · dated evidence base — most recent 2002

Research Citations

Thymalin

In vitro2023 · Int J Mol Sci

The Influence of KE and EW Dipeptides in the Composition of the Thymalin Drug on Gene Expression and Protein…

In vitro2020 · Bull Exp Biol Med

Thymalin: Activation of Differentiation of Human Hematopoietic Stem Cells.

Review1997 · Int J Immunopharmacol

Natural and synthetic thymic peptides as therapeutics for immune dysfunction.

In vitro2022 · Int J Mol Sci

Peptides Regulating Proliferative Activity and Inflammatory Pathways in the Monocyte/Macrophage THP-1 Cell Li…

+1 more

Vilon

Animal2002 · Bulletin of Experimental Biology and Medicine

Comparative study of the effects of vilon, epithalon, and cortagen on thymocyte proliferation and sphingomyel…

About Thymalin

Thymic peptide bioregulator; restores thymic function and T-cell production; modulates cytokine balance; shown to extend lifespan in animal models

Research Areas

immune restorationthymus function supportanti-agingimmune modulation

About Vilon

Synthetic dipeptide Lys-Glu; modulates T-cell and NK cell activity; reduces age-related immune decline; normalizes cytokine production via epigenetic gene regulation

Research Areas

immune modulationanti-agingimmune restorationlongevity

Safety Profile

Information below reflects published research data only — not medical advice. Consult a qualified provider before use.

Thymalin

Reported (Unverified — Pending Clinical Review)

autoimmune disease (use with caution)organ transplant (immunosuppression)

No established clinical contraindications

Vilon

No established clinical contraindications. This is an investigational compound with limited human data and has not been evaluated by the FDA for safety in this context. Consult a qualified clinician.

Price (per mg)

Thymalin

$4.56/mg

$3.06 – $5.44 range

19 vendors

View price index →Find providers →

Vilon

$2.88/mg

$2.66 – $3.01 range

12 vendors

View price index →Find providers →

Find Providers

Where to source these peptides

Providers offering

Thymalin

12 listed

Browse directory →

Providers offering

Vilon

3 listed

Browse directory →

PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.

More Immune & Thymic Comparisons

Browse all peptides →

Educational research tools — not medical advice.

Cite this page

Data last updated August 26, 2026

Free to reference and republish with attribution to PeptideBase. Choose a format:

PeptideBase. (2026). Thymalin vs Vilon — Per-mg Price Comparison. Retrieved September 11, 2026, from https://peptidebase.io/peptides/compare/thymalin/vilon

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