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Khavinson Bioregulators

Khavinson Bioregulators · Cytomax · Cytogen

C
Animal replicated
BioregulatorBioregulatorShort Peptide RegulatorPeptide Complex
RouteInjectableGray-market only
C
Evidence grade: Animal replicated

Effect demonstrated in multiple animal studies; human data sparse or extrapolated. Grades summarize evidence quality, not whether a compound is appropriate, legal, or risk-free.

At a glance
What it is
The Complete Cluster Chapter — 14 Organ-Specific Short Peptide Bioregulators — Bioregulator, Short Peptide Regulator, Peptide Complex.
Why people use it
Used primarily for cognitive support and longevity and anti-aging.
What the evidence supports
The safety profile of Khavinson bioregulators is generally considered favorable based on the available data — but the available data is limited, single-institution, and covers primarily the crude Cytomax extracts rather than the synthetic Cytogens in isolation.
If you only read one thing

40+ Years of Russian Research. 500+ Publications. One Institution. The Most Concentrated Single-Lab Provenance of Any Compound Class in this reference. Vladimir Khavinson (1946-2024) and the St. Petersburg Institute of Bioregulation and Gerontology. The Epigenetic Chromatin Mechanism. The Cytomax vs Cytogen Distinction. The 6-to-8-Year Mortality Study. The 2025 Independent Replication That Changed the Evidence Conversation. 14 Organ-Specific Bioregulators — Their Sequences, Targets, Evidence, and Protocols.

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Route / form

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Evidence fit
Route-specific

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Route caveat
Protocol not standardized

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Protocol anchor
Full dosing section

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Typical dose snapshot
See route notes
Evidence varies by use case
Published literature
0human trials2human studies5animal4in vitro

Human evidence comes mainly from Khavinson/St. Petersburg clinical-program and prospective observational data, not modern randomized controlled trials; single-institution provenance remains the core caveat.

Evidence reality check
Human evidence
2 human studies
2 observational; RCT evidence not present in corpus.
Preclinical base
9 lab signals
5 animal; 4 in-vitro/mechanistic.
Evidence snapshot
The safety profile of Khavinson bioregulators is generally considered favorable based on the available data — but the available data is limited, single-institution, and covers primarily the crude Cytomax extracts rather than the synthetic Cytogens in isolation.
From the chapter quick-reference block.
Categories
Cognition & MoodLongevity & Anti-agingImmune & ThymicHormonal & HPTA
Properties
Active malignancy: caution✓ Human evidenceSingle-lab provenanceInjectable: extrapolated
Evidence
CAnimal replicated
What Bioregulators Are
Khavinson bioregulators are ultra-short synthetic peptides (2-4 amino acids) derived from the active sequences of organ-specific tissue extracts. Each is designed to target a specific organ system and restore age-related decline in gene expression patterns. They are categorized as Cytogens — the defined synthetic versions of the active sequences identified in the crude tissue extract Cytomaxes. The proposed mechanism: direct chromatin interaction, binding specific DNA promoter regions to modify histone acetylation and DNA methylation, restoring youthful transcription profiles in aged cells. This is fundamentally different from receptor-mediated signaling.
Who Developed Them
Vladimir Khavinson (1946-2024), Russian gerontologist, Colonel of Medical Service, Director of the St. Petersburg Institute of Bioregulation and Gerontology. Published 775+ papers. Secured 196 patents. His work began as Cold War military research developing substances to enhance soldier resilience. He died in 2024 at age 78; the Institute continues his program. The concentration of evidence in one institution is the defining characteristic of this compound class.
The Cytomax vs Cytogen Distinction
Cytomaxes: crude polypeptide complexes extracted from animal organ tissues (e.g., Thymalin from bovine thymus; Epithalamin from bovine pineal gland). Multi-component extracts; bioactive peptides not fully characterized. Most clinical human trial data was generated with Cytomaxes. Cytogens: synthetic short peptides representing the isolated active sequence from the Cytomax (e.g., Vilon = Lys-Glu from Thymalin; Epitalon = Ala-Glu-Asp-Gly from Epithalamin). Well-defined; reproducible; the form available from research vendors. The evidence from Cytomax trials cannot be directly extrapolated to Cytogen equivalents — different materials, different pharmacology.
The Landmark Human Study
Khavinson & Morozov (2003, Neuroendocrinology Letters): n=266 elderly persons; 6-8 years follow-up; Thymalin + Epithalamin IM 10mg daily x 10 days per course x 2-3 years; comparison to standard geriatric care. Reported: normalized cardiovascular, endocrine, immune, and nervous system markers; significantly reduced mortality vs comparator. This is the foundational human longevity claim for the bioregulator class. Evidence grade: C — observational, non-randomized, non-blinded, conducted at the developing institution, single site, no independent replication.
The 2025 Independent Replication
Al-Dulaimi et al. (2025, Biogerontology, Brunel University London): independently confirmed Epitalon's (the Cytogen version, AEDG tetrapeptide) telomere elongation effect via telomerase upregulation in human cell lines. This is the first substantial independent Western replication of any Khavinson bioregulator mechanism. It validates the telomerase mechanism for Epitalon specifically — not the broader bioregulator class. The significance: for 22 years, the telomere finding existed only within Khavinson's own laboratory. The 2025 replication changes the evidentiary status of Epitalon's primary claimed mechanism.
14 Compounds in This Chapter
Vilon (Lys-Glu): immune/thymus. Livagen (Lys-Glu-Asp-Ala): cardiovascular/lymphocytes. Cartalax (Ala-Glu-Asp-Pro): cartilage/connective tissue. Pinealon (Glu-Asp-Arg): brain/pineal. Cortagen (Ala-Glu-Asp-Leu): cerebral cortex/peripheral NS. Bronchogen (Ala-Glu-Asp-Leu): bronchial/pulmonary. Testagen (Lys-Glu-Asp-Gly): testes/male reproductive. Cardiogen (Ala-Glu-Asp-Arg): heart/myocardium. Chonluten (Lys-Glu-Asp): mucous membranes/gut/lung. Crystagen (Lys-Glu-Asp-Pro): crystalline lens/eye. Ovagen (Glu-Asp-Leu): ovaries/female reproductive. Pancragen (Lys-Glu-Asp-Ala): pancreas. Prostamax (Lys-Glu-Asp-Gln): prostate. Vesugen (Lys-Glu-Asp): vascular endothelium.
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Khavinson Bioregulator Cluster
C
Same class · Bioregulator

Four Organ-Specific Bioregulators from the Russian Khavinson Research Tradition. The Theory That Short Peptides Regulate Gene Expression in a Tissue-Specific Way. Cortexin: A Russian-Approved Neuroprotective Extract with Multi-Receptor Activity. CardioCytogen (Ala-Glu-Asp-Arg): The Cardiac Fibroblast Modulator. Crystagen: Connective Tissue and Cartilage Bioregulator. Bronchogen: Pulmonary Bioregulator Tetrapeptide. The Shared Evidence Architecture That Applies to All Four.

Epitalon
C
Same class · Bioregulator

40 Years of Research From One Lab. The Most Cited Telomere Peptide in the Longevity Space. The First Independent Replication Was Published in 2025.

Pinealon
C
Same class · Bioregulator

Short Khavinson tripeptide positioned for brain and pineal-gland bioregulation. The appeal is cognitive aging, neuroprotection, and circadian support; the limitation is that the evidence is mostly single-institution preclinical work, not human clinical validation.

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