Khavinson BioregulatorTarget: ThymusImmune

Vladonix

Thymus Extract Bioregulator · Thymic Cytomax · Владоникс

Vladonix is the Cytomax thymus complex - the capsule counterpart to Thymalin (injectable extract) and to the synthetic immune short peptides Vilon, Crystagen, and Thymogen. It is not a steroid, not thymosin-alpha-1, and not “just Vilon in a pill.”

Not FDA-approved - research chemical
Reviewed by CalcMyPeptide Editorial Team
Last updated: August 2026Evidence: Low4 peer-reviewed citations
Typical research dose
1-2 capsules/day
Frequency
1-2× daily for 10-30 day cycles
Half-life
Mixture (variable)
Common vials
N/A (oral)
CAS
N/A (biological extract)
Molecular weight
Mixture (<10 kDa)

Use-case scores

0–10 against the evidence we have, not a gym ranking. Hidden domains do not apply here.

  • Longevity / aging3.5/10

    Khavinson-school tissue peptide. Single-lab concentration after haircut. Not a Western Phase 3 geroprotector.

  • Immune3.5/10

    Thymus/immune organ map in the school. Not Zadaxin and not a US immune-deficiency drug.

Compound card

Sequence
Thymus peptide complex (mixture, not a single CAS)
Class
Khavinson Cytomax capsule complex (Thymus)
Formula
Polypeptide extract (Thymus tissue <10 kDa)
Status
Not FDA-approved · research use

How it works

Vladonix (A-6) is a Cytomax natural polypeptide extract from the thymus gland of young calves - often called the single most important immune bioregulator in the Khavinson A-Series. The thymus is the primary training ground for T-lymphocytes: naïve T-cells migrate from bone marrow to the thymus, where they undergo positive and negative selection to emerge as competent, self-tolerant CD4+ helper and CD8+ cytotoxic T-cells. Thymic involution begins as early as age 1 and is 70–90% complete by age 45 - a catastrophic loss of adaptive immune capacity that underlies much of what we call "immune aging" (immunosenescence).

Vladonix delivers short peptide signals (<10 kDa) from bovine thymic tissue. These peptides enter thymic stromal cell (epithelial cell, dendritic cell) and thymocyte nuclei to reactivate transcription of: FOXN1 (the master transcription factor for thymic epithelial cell identity and thymopoiesis), thymosin α1 and β4 (thymic hormones that guide T-cell differentiation), MHC class I and II molecules (enabling T-cell education), and IL-7 and IL-15 (cytokines maintaining T-cell memory and naïve T-cell survival). Together, these actions work to reverse thymic involution and restore adaptive immune capacity.

In Khavinson's research, thymic peptide bioregulators demonstrated some of the most striking longevity data - animals treated with thymic extracts showed enhanced immune surveillance, reduced cancer incidence, and extended median lifespan. Vladonix is paired with Endoluten (A-8, pineal) in what many practitioners call the "longevity core stack" - Endoluten restores the circadian master clock, while Vladonix rebuilds the immune system's aging surveillance capacity. Together, they address the two most Khavinson considers dominant determinants of biological age.

Source: PMID: 12677266

Khavinson map

Canonical 41
Class
Cytomax (natural peptide complex)
Organ
Thymus
Target
Thymus
System
Immune
Sequence
Mixture / not a single CAS
Владоникс

Used in bioregulator stacks

Manufacturer-style organ combinations - not FDA protocols. Every name is a live leaf.

The Khavinson school

Vladimir Khatskelevich Khavinson (1946–2024) spent five decades at what became the St. Petersburg Institute of Bioregulation and Gerontology arguing a simple, stubborn idea: aging is, in part, a failure of tissue-specific peptide signals, and those signals can be restored. The first products were not “peptides” in the Instagram sense. They were Cytamins - polypeptide fractions isolated from a named organ of young animals. Later commercial refinements of those fractions are sold as Cytomaxes (Cytomed / NPCRIZ): still mixtures, still oral capsules, still defined by the source organ rather than a single sequence. When the group identified short active motifs inside those mixtures, they synthesized them as Cytogens - di-, tri-, and tetrapeptides with a one-letter code (KE, AEDG, KED, EDR, KEDP, and so on).

That three-layer stack is the whole map. Cytamin / pharmaceutical extracts (Thymalin, Epithalamin, Cortexin, Retinalamin, Prostatilen) are the clinic-era injectables registered in the former Soviet pharmacopeia. Cytomaxes are the capsule complexes Cytomed still lists as a 21-SKU organ line. Cytogens are the defined synthetics. English-language educators, including Brenden Henry’s public writing at Peptide Science Institute, add a further commercial distinction - later analog SKUs (N-acetyl, amidate, “V2” complexes) sold as more stable or more diverse than the original Cytomed lots. That last layer is a product taxonomy, not a Khavinson paper. We describe it so readers are not gaslit by three bottles with the same organ name. We do not reproduce paid Peptide Mastery protocols, Precision Cell Method language, or anyone else’s course IP.

Full Cytamin → Cytomax → Cytogen map, literature limits, and how we counted 41

The mechanism Khavinson published is epigenetic, not receptor-agonist in the GLP-1 sense. Short peptides are claimed to enter nuclei, interact with DNA/histones, and reopen tissue-specific transcription that condensed with age (heterochromatin → euchromatin). Reviews in the Bulletin of Experimental Biology and Medicine and Neuroendocrinology Letters (PMID 14523363, 15677927, 23888677) are the citable core. Complementary GI pharmacology is not mystical: di- and tripeptides are PEPT1/LAT substrates, which is why oral capsules are even a conversation. What is not established in Western Phase 3 programs is organ-by-organ disease treatment, telomere reversal as a clinical endpoint, or the manufacturer claim that Cytomax is “a third stronger” than Cytogen. Those are NPCRIZ marketing sentences.

Khavinson’s group published hundreds of papers, many in Russian, many in the same journal family. That is a real literature. It is also a literature with limited independent Western replication, small n, and a habit of using one review PMID as a stamp on every organ. On this site a leaf earns its organ story, its Cytomax↔Cytogen pair, its sequence if it has one, and an honest sentence about what has not been shown. Reconstitution math belongs on cytogens sold as vials. Cytomax capsules do not get a fake 5 mg vial.

The 41 we treat as canonical are the 21 Cytomaxes on the public e-peptide/Cytomed list, the 12 Cytogens on that same commercial line (including Vesilut, which Western catalogs often drop), plus eight historically load-bearing molecules that sit beside the capsule SKUs: Epitalon, Vilon, Thymogen, Livagen, Cortagen, Prostamax, Thymalin, and Epithalamin. Honluten, Cortexin, Retinalamin, Prostatilen, Thymulin, N-acetyl-epitalon-amidate, Pinalex, and the GPL Man / GPL Femme kits are covered as adjacent - same school or same storefront, not padded into a fake 41.

Public English-language teaching (including Brenden Henry at peptidescienceinstitute.com) is cited as context, not copied. Paid Peptide Mastery / Peptide Salvation text stays theirs.

History of this molecule

The thymus is Khavinson’s other flagship organ, because it involutes on a schedule every mammal knows. Soviet peptide gerontology treated thymic extracts as a way to keep T-cell education from collapsing with age. Thymalin is the pharmaceutical extract that actually has a long clinical footprint in Russia. Vladonix is the Cytomax capsule complex from the same organ.

Western peptide Twitter collapsed “thymic peptide” into Thymosin Alpha-1 (Zadaxin) or TB-500. Those are different molecules, different developers, different regulatory stories. Khavinson’s thymic line is tissue-specific short peptides and extracts - KE (Vilon), EW (Thymogen), EDP (Crystagen), plus the complex. Mixing TA1 papers into a Vladonix page is how you get a fake evidence stack.

The Institute’s pairing is explicit on the NPCRIZ map: Vladonix (complex) with the immune cytogens. Crystagen is the broad immunocompetent-cell cytogen - not a colon peptide, despite a bad Western catalog that still says “gut.” If a page on this site ever said colon, that was a bug. The organ is immune/thymus.

Khavinson and Morozov’s early extract work on thymic peptides is the historical layer. The 15-year Thymalin + Epitalon mortality follow-ups that English blogs love are extract/synthetic combination data, not a Vladonix capsule trial in Florida.

Caveats

Thymus Cytomax is not a US dietary-supplement monograph and not a drug. The tissue-extract model means lot-to-lot composition is a fingerprint, not a single CAS number. English-language “V2” bottles that claim more peptide diversity are a later commercial layer (mass-spec marketing from specific brands) - they are not Khavinson’s 1990s papers. Animal-source capsules are inappropriate if the reader has a religious or allergy constraint on the source species. None of this replaces care for the actual organ disease. Autoimmune disease is the obvious caution the marketing never prints: “restore immune transcription” is not a synonym for safe in lupus. Thymalin/Thymogen have been used in Russian infectious-disease and post-radiation contexts; that is not a license to self-treat immunodeficiency.

Full 41-map: Khavinson bioregulators index · Bioregulator stacks

Research Use Cases

  • ✓Thymic Cytomax vs Vilon vs Thymalin
  • ✓Not immune restoration or post-infection recovery

Dosing

PhaseDoseFrequencyNotes
Mini-Course / General Preventive (1 box)2 capsules (20 mg)Once daily for 10 days, 30 min before mealsStandard Khavinson mini-course (20 caps). Repeat every 6 months. Combine with Endoluten (A-8) for the foundational longevity immunity stack.
Full Monthly Course (Immune Restoration)2 capsules (20 mg)Twice daily for 30 days (120 caps = 2× 60-cap boxes)Bi-annual 30-day courses for adults with clear immune decline, frequent infections, or post-illness immune rebuilding. Core longevity immune stack: Vladonix (A-6) + Endoluten (A-8) + Bonomarlot (A-20) for thymic-pineal-hematopoietic system restoration.
Intensive / Immune Senescence Reversal Protocol2 capsules (20 mg)Twice daily, repeated monthlyPost-chemotherapy immune recovery, severe immunosenescence, or chronic immunosuppression (non-pharmaceutical). Physician supervision required for any immunocompromised state. Max: 4 caps/day (40 mg).

Administration

Route / form
Oral capsules - swallowed with water. Cytomed Cytomaxes ship as capsules, not sublingual tablets and not lyophilized research vials.
Timing
Morning, with water, about 30 minutes before meals (empty stomach).
Empty stomach?
Yes - Empty stomach - about 30 minutes before meals. Cytomed boxes sometimes print “with food” because they are labeled as supplements; the manufacturer user-guide preference is before meals for absorption.

Vladonix: Not a research vial vs Oral capsule

Not a research vial
Bioavailability
Not applicable. This Cytomax SKU is not sold as a lyophilized research vial. There is no SubQ F% because Cytomed does not ship this complex as a cake.
Dose note
Do not reconstitute Vladonix. No BAC-water chart, no 5 mg vial math, no units-on-a-U-100 conversion. The defined-sequence vial in this aisle is the cytogen pair (Vilon (KE), Crystagen (EDP), Thymogen (EW)), a different SKU. Thymalin is the pharmaceutical extract in this organ family (clinic-era injectable or other non-capsule form), not this Cytomax.
Advantages
  • The defined-sequence vial in this aisle is the cytogen pair (Vilon (KE), Crystagen (EDP), Thymogen (EW)), a different SKU.
  • Thymalin is the pharmaceutical extract in this organ family (clinic-era injectable or other non-capsule form), not this Cytomax.
  • A vial labeled Vladonix is a mis-ID. Immune powders to reconstitute are Vilon, Crystagen, or Thymogen. Thymalin is the extract ampoule, not this capsule.
Considerations
  • Vladonix is an oral capsule complex. It is not a 5 mg lyophilized research vial.
  • Inventing recon math for a zero-mg Cytomax vial is how people inject the wrong product.
  • Not an official Cytomed sublingual tablet, IM ampoule, or eye drop either.
Oral capsule
Bioavailability
Not quantified in a Western PK study. Official Cytomed form is a swallowed capsule. PEPT1/LAT transport is class biology for short peptides, not an F% for this tissue mixture.
Dose note
Typical Cytomed labeling: 1–2 capsules daily in 10–30 day courses, swallowed with water about 30 minutes before meals (empty stomach). Manufacturer protocol, not an FDA label. Some boxes print “with food” because they are labeled as supplements; the timing copy we use is before meals.
Advantages
  • Official form for Vladonix: swallow the capsule with water. No reconstitution step and no 5 mg cake.
  • Thymus Cytomax: the capsule counterpart to Thymalin. Not thymosin alpha-1 (Zadaxin) and not “Vilon in a pill.”
  • Course-based (10–30 days, a few times a year in manufacturer folklore), not a daily forever drug.
Considerations
  • Thymus Cytomax is a peptide mixture / lot fingerprint, not a single CAS. English “V2” bottles are a later commercial layer, not a Khavinson RCT.
  • Russian school literature is not an FDA organ-disease label.
  • Third-party lingual SKUs exist in the wild. We do not claim sublingual as the official Cytomed Cytomax form.
Recommendation: Swallow Vladonix as oral capsules with water, about 30 minutes before meals. Thymus Cytomax complex, not Thymalin IM, not Vilon / Crystagen / Thymogen powder, and not TA-1. Pair: Vilon, Crystagen, Thymogen. Russian thymic-extract literature is not a US immune-drug label.

Timeline

Days 1 - 14
Thymic epithelial cell gene expression restoration initiated. Immune response time and severity improvements may begin.
Month 1–3
Improved T-cell repertoire diversity. Reduced frequency and severity of infections, particularly viral.
Month 3–6
Sustained thymopoiesis support. CD4:CD8 T-cell ratio normalization. Improved immune surveillance of senescent and abnormal cells.

Who it is for

Immunosenescence / Longevity (Ages 40+)

Low

Restores thymic stromal FOXN1 and thymosin gene expression - targeting the root cause of age-related immune decline. Foundation of the Khavinson longevity immunity protocol.

Post-Illness / Post-Viral Immune Rebuilding

Low

Used in post-COVID, post-chemotherapy, and post-severe-infection protocols. Re-establishes adaptive immune capacity after depletion events.

Safety & Considerations

Natural glandular extract (Cytomax) from bovine thymus tissue, <10 kDa. No hormones. Meets European/Russian veterinary standards. Generally recognized as safe.

Regulatory & Legal Status

FDA Status (US)
Research Only
WADA Status (2026)
Not Listed

Not currently on the WADA 2026 Prohibited List. Policies may change - verify before competition.

Classification

Research Chemical

US Compounding: Not eligible / not available

⚠️ This information is for educational purposes only and may not reflect the most current regulatory updates. Always verify with official FDA, WADA, and jurisdiction-specific sources before use.

Limits of current evidence

  • Cytomax SKUs are oral capsules. Do not run SubQ reconstitution math on a zero-mg vial.
  • Lot-to-lot composition is a fingerprint, not one sequence.
  • This site will not treat the named organ disease from a peptide page.
  • English-language V2 / analog bottles are a later commercial layer, not a Khavinson RCT.

Verdict

Vladonix is a Cytomax capsule complex from Thymus. It is not the paired cytogen, not a 5 mg research cake, and not a US supplement monograph. The organ story is in the dossier on this page.

Interactions & Contraindications

Capsules skip SubQ recon. Autoimmune caution, not a target.

Synergies & Common Stacks

Complex vs dipeptide. Not layered thymic reconstitution.

Frequently Asked Questions

Oral capsule or injection?▼
Vladonix is a Cytomax oral capsule: swallow with water, about 30 minutes before meals. It is not a 5 mg lyophilized research vial and not an official Cytomed sublingual tablet (third-party lingual SKUs exist in the wild). If you want a defined-sequence powder to reconstitute, that is the cytogen pair (Vilon / Crystagen / Thymogen), not this complex. Do not run BAC math on a capsule SKU. Thymalin is the thymus extract (historically IM). This is not thymosin alpha-1.
Vladonix vs Thymalin vs Vilon?▼
Vladonix = Cytomax thymus complex (capsules). Thymalin = pharmaceutical thymus extract (historically injectable). Vilon = synthetic Lys-Glu. Crystagen = synthetic Glu-Asp-Pro (immune, not colon). Thymogen = synthetic Glu-Trp.
Is this thymosin alpha-1?▼
No. TA1 is a 28-residue peptide with a separate US/Asia drug history (Zadaxin). Different sequence, different developer, different evidence.
Can I reconstitute Vladonix?▼
Not if it is a real Cytomax capsule. Vial math belongs on Vilon/Thymogen/Crystagen research powders.
Why stack Vladonix with Crystagen?▼
The school’s own logic is complex (many peptides from thymus) plus one defined motif. Stacking every immune SKU is vendor arithmetic, not a published factorial trial.
Why is Vladonix so important for longevity?▼
Thymic involution - the progressive shrinking of the thymus - is one of the most dramatic aging changes in the body, with 70–90% of thymic tissue lost by age 45. This collapses adaptive immune capacity, reducing the body's ability to fight infections, detect cancer cells, and maintain immune tolerance. Vladonix targets the FOXN1 gene, the master regulator of thymic epithelial cell identity, to reverse this involution.
What is the Vladonix + Endoluten stack?▼
Khavinson considers Vladonix (A-6, thymic/immune) and Endoluten (A-8, pineal/circadian) as the two most critical longevity bioregulators. Endoluten resets the master circadian clock and melatonin production; Vladonix restores adaptive immune capacity. Together they address the two most fundamental drivers of biological aging: circadian dysregulation and immune senescence.

References

  1. Lezhava T, Khavinson VKh et al. “Effects of Livagen and Vilon peptides on chromatin in lymphocytes from old people.” Biogerontology related / Bull Exp Biol Med lineage (2004). PMID: 12677266
  2. Khavinson VKh et al. “Tissue-specific effects of peptides.” Bulletin of Experimental Biology and Medicine (2005). PMID: 15677927
  3. Khavinson VKh, Lin’kova NS, Tarnovskaya SI “Short peptides regulate gene expression.” Bulletin of Experimental Biology and Medicine (2013). PMID: 23888677
  4. Khavinson VKh, Morozov VG “Peptide regulation of aging: from experimental studies to clinical practice.” Advances in Gerontology (2003). PMID: 14523363

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