What is the difference between Thymalin and Vladonix?

Thymalin: Thymic peptide bioregulator; restores thymic function and T-cell production; modulates cytokine balance; shown to extend lifespan in animal models Vladonix: Short peptide complex penetrates cell nuclei and modulates gene expression in thymic and T-lymphocyte cells. Promotes T-cell maturation, normalizes CD4/CD8 ratios, and supports cytokine balance.

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.

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 Vladonix administered in research settings?

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

Home›Research›Compare›Thymalin vs Vladonix

Peptide Comparison

Thymalin vs Vladonix

Name: Thymalin vs Vladonix — 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 →

Vladonix

thymus peptide bioregulator

LongevityResearch Only

1 providers listed

Full Vladonix profile →

Bottom line

Thymalin is carried by more providers on PeptideBase (12 vs 1); otherwise the two are closely matched on the measures we track.

Quick Verdict

Thymalin

Vladonix

Which One Should You Choose?

Your goal	Better option
Stronger clinical evidence	Thymalin
Oral administration option	Vladonix
More provider options (12 vs 1)	Thymalin

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

Side-by-Side Comparison

Thymalin

Vladonix

Mechanism Family

Immune & Thymic

Half-life

Unknown

—

FDA Status

not evaluated

unknown

Admin Routes

subcutaneous, intramuscular

oral, subcutaneous

Availability

Research Only

Providers

12 listed

1 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.

—

Research Evidence

Thymalin

Review · 5 key studies · most recent 2023

Vladonix

Review · 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

Vladonix

Review2002 · Neuroendocrinology Letters

Peptides and ageing

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 Vladonix

Short peptide complex penetrates cell nuclei and modulates gene expression in thymic and T-lymphocyte cells. Promotes T-cell maturation, normalizes CD4/CD8 ratios, and supports cytokine balance.

Research Areas

immune restorationT-cell supportthymic functionlongevityanti-aging

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

Vladonix

Absolute Contraindications

Under clinical review

Being verified by our medical team before we display contraindications for this peptide.

Price (per mg)

Thymalin

$4.56/mg

$3.06 – $5.44 range

19 vendors

View price index →Find providers →

Vladonix

Not enough vendor pricing yet.

Find Providers

Where to source these peptides

Providers offering

Thymalin

12 listed

Browse directory →

Providers offering

Vladonix

1 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 Vladonix — Per-mg Price Comparison. Retrieved September 11, 2026, from https://peptidebase.io/peptides/compare/thymalin/vladonix

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