Hondramin
Cartilage cytamin — Khavinson-school organ peptide fraction, oral tablet
Hondramin (Cartilage cytamin — Khavinson-school organ peptide fraction, oral tablet) is a longevity & bioregulators research compound. A polypeptide fraction extracted from animal cartilage, 155mg per tablet. Cartilage is the one tissue in this line where the school moved past extracts to a named mechanism: short peptides reported to push mesenchymal stem cells toward a chondrogenic program, and a calf-cartilage polypeptide preparation tested on matching organotypic cultures at 0.01 to 100 nanograms per milliliter. Both are cell-culture results. Neither used this tablet, and the concentrations they used are the reason the comparison has to be written out rather than implied.
Hondramin quick facts
| Route | Oral |
| Frequency | Not established · Not established |
| Half-life | Not characterized — no analytical method for this preparation has been published |
| Forms | Oral |
| Evidence level | No published study of this product. The cartilage literature in this school is cell culture, using defined synthetic peptides or a different preparation. |
Cartilage is the hardest tissue on this shelf to falsify honestly, because it has no blood marker that tracks its structure — which is precisely why it is the easiest place to sell something. What can be measured is inflammation alongside it, and imaging can measure the joint itself. Nobody has published either for this product. The school's own cartilage results are cell-culture experiments using defined synthetic peptides at nanogram concentrations, which is a different substance at a different scale from a swallowed 155mg tablet.
How Hondramin works
A polypeptide fraction extracted from animal cartilage, 155mg per tablet. Cartilage is the one tissue in this line where the school moved past extracts to a named mechanism: short peptides reported to push mesenchymal stem cells toward a chondrogenic program, and a calf-cartilage polypeptide preparation tested on matching organotypic cultures at 0.01 to 100 nanograms per milliliter. Both are cell-culture results. Neither used this tablet, and the concentrations they used are the reason the comparison has to be written out rather than implied.
Proposed benefits
Researched for mitochondrial and cellular-energy support, tissue-specific bioregulation and healthy-aging pathways.
Where to get Hondramin
Buy Hondramin at RUPharma →The evidence for Hondramin
Graded by what exists behind each claim.
✅ Clinically validated
- None. No published study of this product. The class searches run 8 September 2026 return four papers about cytamines, none of them about this tablet.
📊 Correlative data
- The modern cartilage work in this school is peptide regulation of chondrogenic stem cell differentiation (Linkova 2023) — defined peptides, in culture, acting on cells deciding what to become.
- A calf-cartilage polypeptide preparation was among those tested on matching organotypic cultures at 0.01-100 ng/ml (Ryzhak 2015).
🧪 Theoretical / extrapolated
- Cartilage is avascular. Chondrocytes are fed by diffusion from synovial fluid through a dense matrix, so anything absorbed has to reach blood, then synovium, then synovial fluid, then diffuse. Every other organ in this catalog is perfused; this one is not.
- The mechanism's own prediction points away from the market: an effect on stem cells choosing a cartilage fate should be largest in growth and repair and smallest in the aging joint this is bought for.
- There is no blood marker that tracks cartilage structure, which is exactly why the category is easy to sell and hard to falsify. hs-CRP and ESR measure whether anything systemic is happening at all.
How to read these tiers: they say how much human evidence exists, not how well something works — and ✗ flags harm, never a disappointing trial. How the evidence tiers work →
What Hondramin actually does
Cartilage has no blood supply, and that single fact reorganizes this entire page. Adult articular cartilage is avascular, aneural and alymphatic. Chondrocytes are fed by diffusion from synovial fluid, driven by joint loading, through a dense matrix of collagen and aggrecan. Anything absorbed from a tablet has to reach blood, then synovium, then synovial fluid, then diffuse through matrix. Every other organ in this catalog is perfused. This one is not, and no product page in this market says so.
The cartilage claim in this school is about defined molecules and stem cells. Linkova 2023 concerns peptide regulation of chondrogenic stem cell differentiation — short peptides of known sequence influencing whether a mesenchymal stem cell commits to a cartilage lineage. That is a differentiation argument in culture, consistent with the broader claim that these peptides act tissue-specifically on aging cells Khavinson 2012, and it is a claim about new cartilage-forming cells rather than about repairing existing matrix.
The preparation the school actually tested on cartilage is not this one. Ryzhak 2015 used calf-tissue polypeptide preparations, cartilage among them, on matching organotypic cultures from young and old rats at 0.01 to 100 ng/ml. Applied directly. In nanograms. The tablet is 155 mg of an undefined fraction, swallowed, and no experiment has ever joined those two descriptions.
What the class premise would have to mean here. Tissue-specific regulation of gene expression Khavinson 2021, in cartilage, means changed chondrocyte transcription of collagen type II and aggrecan, or reduced matrix-degrading enzyme activity. Both are measurable in tissue and in synovial fluid. Neither has been measured for this product, and neither is measurable from a blood draw, which is why the falsifiability section on this page is harder than on any other cytamin.
Cell, rodent, human — and where it stops
What the class searches returned. The PubTator3 queries run on 8 September 2026 for the class terms return four papers about cytamines and none about this individual product. The nearest human paper is Emirova 2004, a 2004 Russian study of cytamines combined with ecdystene, apilak, vitamax and essentiale on the work capability of athletes — a combination study with an exercise-tolerance endpoint, not a joint endpoint, and not this tablet.
The cell rung is where the real work is, and it is about stem cells. Linkova 2023 is a 2023 paper in an international journal on peptide regulation of chondrogenic stem cell differentiation. It is the most modern piece of cartilage biology this school has produced. It concerns defined peptides at culture concentrations acting on cells that are deciding what to become, which is a long way from an aging joint that has already decided.
The explant rung, with the tissue named. Ryzhak 2015 lists a cartilage polypeptide preparation among those it tested on organotypic cultures. That is the closest any published experiment comes to this product's own tissue, and it used a different preparation at a concentration four to seven orders of magnitude below what a tablet implies.
Where the chain breaks, and it breaks twice. First at the gut, like every oral extract on this shelf. Then at the joint, which is a barrier no other cytamin has to cross: a molecule in plasma reaches synovial fluid at a fraction of its plasma concentration, and then has to move through matrix by diffusion. Two barriers in series, neither measured for this product, and the second one is not measured for any product in this catalog.
Hondramin pharmacokinetics — how much of it actually gets in
What degrades it. The standard sequence for a nucleoprotein tablet: gastric acid and pepsin, then pancreatic proteases, then brush-border peptidases reducing the remainder to amino acids and di- and tripeptides. Cartilage tissue is unusually rich in collagen, and collagen is digested to di- and tripeptides like any other protein — which is the same fate the collagen supplement category already lives with and does not exempt this one.
The oral barrier, then the joint barrier. Whatever crosses the gut wall does so through saturable carriers built for two- and three-residue fragments Khavinson 2023, and no oral bioavailability figure has been published for this preparation. Then comes the part no vendor discusses: synovial fluid is an ultrafiltrate of plasma, and for most solutes its concentration sits below the plasma level, with larger molecules penalized more. Cartilage matrix then imposes a diffusion delay measured in hours for small solutes and effectively excludes large ones.
The arithmetic, and it is less favorable than on any other cytamin page. One 155 mg tablet distributed intact into 5 liters of blood would give about 31 µg/ml. Assume, generously, 1% intact absorption and that is 310 ng/ml in plasma; assume synovial fluid reaches half of plasma and that is roughly 150 ng/ml at the cartilage surface, before matrix diffusion. That still overlaps the 0.01-100 ng/ml explant range Ryzhak 2015, which is why the honest objection is the absence of measurement rather than an impossibility argument.
No half-life, and no injectable comparator either. No analytical method has been published for this preparation, so there is no analyte to follow. There is also no injected cartilage extract in this catalog to anchor a ceiling against, unlike the brain arm of the family. Any effect would follow the shape of a protein meal — hours, not days — which makes a 40-tablet pack a course rather than an accumulation.
What would have to be true, and how you would know it was not
Four predictions. Cartilage is the hardest tissue on this shelf to falsify honestly, and saying so is part of the answer.
1. hs-CRP, baseline and end of course. It will not measure cartilage. It will measure whether anything systemic is happening at all, and it is the cheapest test on this list. Prediction: no change. Named first because a page that only proposes measurements it expects to move is not being falsifiable.
2. ESR alongside it, for the same reason and a different mechanism. Erythrocyte sedimentation rate moves more slowly than hs-CRP and is sensitive to different things, so the pair disagreeing is informative in a way either alone is not. Zero published records of this product report either marker.
3. A validated joint questionnaire, scored before and after, and the thing that will fool you. WOMAC and KOOS are free, validated and take ten minutes. What they will not do is separate the tablet from the weather, from a lighter training week, or from the natural waxing and waning of joint symptoms, which is large. That is why an unblinded self-test on a joint product is the least reliable self-experiment on this whole site.
4. Against the product: the mechanism predicts nothing measurable in a person who is not building cartilage. Linkova 2023 is about stem cells choosing a chondrogenic fate. An adult joint has few such cells and little capacity to make new matrix. If the mechanism is real it should show most in growth, healing after injury or a stem-cell context, and least in the aging joint that is the actual market. That is the school's own logic pointing away from the sale.
What nobody has tested yet
Nobody has measured a cartilage turnover marker. Serum CTX-II and COMP are established research markers of cartilage matrix breakdown. They are not routine, they are not perfect, and they are far better than nothing — and nothing is what has been reported for every product in this line.
Nobody has imaged a joint. Cartilage thickness is measurable by magnetic resonance imaging and change is detectable over a year in osteoarthritis trials. That is a real study rather than an afternoon, and it is the study that would settle whether any oral cartilage product does what the category claims.
Nobody has assayed a tablet. Peptide profile and molecular weight distribution by mass spectrometry would say whether a cartilage extract differs from a vessel extract in any measurable way. Ryzhak 2003 shows the school does analytical work on its manufacturing; nobody has turned it on a finished pack.
Extrapolation, labeled as such. If short peptides are the active species, the defined synthetic versions this school already sells should outperform an extract on the same assay, because they are the same molecules without the dilution. That comparison has never been published for cartilage or for any other tissue, and it is the one experiment whose result would either justify or retire the whole extract line.
Hondramin — its own safety story, not its class's
Three things specific to an oral extract of animal cartilage.
The empty adverse-event record. No published study of this product exists, therefore no published adverse event exists, and the second follows from the first rather than from anyone having checked.
Bovine connective tissue is the one category with a real regulatory history. Cartilage and bone preparations from cattle sit inside the same specified-risk-material frameworks that exist because of transmissible spongiform encephalopathy. Ryzhak 2003 states the class is made from young animals and screened by World Health Organization methods, which is the school's assurance rather than an independent one. No vendor of this product publishes species, country of origin or animal age, so a buyer cannot check the claim that matters.
The specific hazard here is not the tablet, it is the delay. A joint that hurts for months while somebody works through several 40-tablet courses is a joint that has not been examined. Persistent joint pain, swelling, locking or a joint that gives way are reasons to be assessed by a clinician, and no supplement page should sit between a reader and that assessment. This one says so plainly because the product's own evidence gives no reason to wait.
Sources read for this page
- Linkova N, Khavinson V, Diatlova A, Myakisheva S, Ryzhak G. Peptide Regulation of Chondrogenic Stem Cell Differentiation. International Journal of Molecular Sciences 2023;24(9):8415 · PMID 37176122
- Ryzhak AP, Chalisova NI, Lin'kova NS, Khalimov RI, Ryzhak GA, Zhekalov AN. [Polypeptides influence on tissue cell cultures regeneration of various age rats]. Advances in Gerontology 2015;28(1):97-103 [Russian] · PMID 26390619
- Khavinson VKh. Peptides tissue-specifically stimulate cell differentiation during their aging. Bulletin of Experimental Biology and Medicine 2012 · PMID 22808515
- Khavinson VKh, Popovich IG, Linkova NS, Mironova ES, Ilina AR. Peptide Regulation of Gene Expression: A Systematic Review. Molecules 2021;26(22):7053 · PMID 34834147
- Ryzhak GA, Nekrasov PA, Kiselev OI, Khavinson VKh. Study of protein components of natural peptide regulators. Bulletin of Experimental Biology and Medicine 2003 · PMID 12717513
- Emirova LR, Rozhkova EA, Paniushkin VV, Mirzoian RS, Seifulla NR. [The effects of cytamines and their combinations with ecdystene, apilak, vitamax, and essentiale on the work capability of athletes]. Eksperimental'naia i Klinicheskaia Farmakologiia 2004 [Russian] · PMID 15341074
- Khavinson VK, Linkova NS, Rudskoy AI, Petukhov MG. Feasibility of Transport of 26 Biologically Active Ultrashort Peptides via LAT and PEPT Family Transporters. Biomolecules 2023;13(3):552 · PMID 36979488
Hondramin — safety, predicted from mechanism
Predicted from mechanism, not from a human safety trial. How that reasoning works →
What the mechanism predicts
Derived from the molecule, not a trial.
- These are short peptide fragments of organ extracts, and the honest starting point is that the mechanism itself is not established in a way that lets anyone predict harm precisely. The proposal is gene-regulatory — short peptides binding DNA and modulating transcription in a tissue-specific way. If that is what they do, the theoretical concern is influencing transcription in tissue you were not aiming at.
- In practice the doses are tiny, the peptides are short, and they are degraded quickly — which is also the argument that they may do very little at all. Those two possibilities are the same uncertainty viewed from opposite ends, and you should hold both.
What has actually been reported
- Decades of Russian clinical use with a strikingly clean tolerability record — injection-site reactions and little else reported.
- That record comes almost entirely from one research school, is largely unreplicated outside it, and safety data from a group with an interest in the outcome is worth less than the same data from a skeptic. This is not an accusation; it is how evidence weighting works.
How to reduce the risk
Same mechanism as the prediction.
- Follow the course printed on the label rather than running continuously. These are the one class in the Vault where a duration is STATED rather than inferred, and it is typically 10–20 days repeated a few times a year. Read the box.
- Run one at a time. They are cheap and it is tempting to stack six. If something changes, a stack of six tells you nothing about which one did it — and given the evidence base, attribution is the entire value of your own experiment.
- Decide your endpoint before you start, and make it a marker or a measurable symptom rather than a feeling. With a compound class this under-evidenced, an unfalsifiable endpoint means you will conclude it worked no matter what happened.
- Buy from a source that publishes third-party testing. Where the molecule itself is uncertain, identity and purity are the only variables you can actually control.
What it does to your bloodwork
A fact about the assay.
- Test the ORGAN, not the peptide. A thymic peptide is judged on immune markers, a pineal one on sleep and IGF-1, a vascular one on lipids and inflammatory markers. There is no assay for the compound itself.
Don't run this if
- Pregnancy — not because of a specific finding, but because nobody has studied it and the mechanism claim is transcriptional.
- Active malignancy, on the same reasoning as any tissue-growth signal: unproven, mechanistically arguable, and not worth finding out.
The honest unknown
- Essentially everything a skeptic would want: independent replication, pharmacokinetics, and whether the oral forms survive digestion at all. Unproven is not the same as ineffective — but here it is a large unproven.
Not medical advice. If you take prescription medication or have a diagnosed condition, check this with a pharmacist or doctor.
Hondramin — interference & stacking
Predicted from mechanism, not from an interaction study. How mechanism-predicted claims are made →
What Hondramin moves on your bloodwork
Expected direction, not a measured one.
- Comprehensive Metabolic Panel (CMP) — ◆ worth watching
These are short peptide fragments given in microgram amounts and there is no mechanism predicting a specific marker shift. Listing markers here would be padding.
What to do: Test the organ system the bioregulator is aimed at, not a generic panel — that is the only measurement that would tell you anything.
The evidence base here is almost entirely one research group's, largely in Russian, and rarely replicated independently. That is the single most important thing to know before running a course, and it is more useful than any interaction list.
- Dose range and how to work up to it
- When to take it, and why that window
- Cycle length
- Time off between cycles
- Fasted or fed, and when in the day
- Coach Cam's personal notes
- Which compounds push the same lever, and why the dose adds up faster than people count
- What blunts it — the stacks that waste your money
- What compounds the risk, so a side effect arrives sooner than any one of them suggests
- Coach Cam's read on running it alongside the rest of your protocol
Everything above is free and stays free. Skool is where it becomes a plan — Hondramin in an order, with the rest of what you're running.
Unlock in Skool — $10/mo →Bloodwork to run alongside Hondramin
Baseline first, then again at 8–12 weeks.
| Marker | What it’s watching for |
|---|---|
| hs-CRP (High-Sensitivity C-Reactive Protein) | Chronic low-grade inflammation is the process most of these target |
| ApoB (Apolipoprotein B) | Counts the particles that actually cause plaque, unlike LDL-C |
| HbA1c (Hemoglobin A1c) | Glycation, which is the other half of the ageing story |
| Comprehensive Metabolic Panel (CMP) | Liver and kidney — the two organs that clear everything you take |
| Complete Blood Count (CBC) with Differential | The cheapest broad screen there is |
The Longevity Baseline panel covers these in one order — 13 markers, $219.10 with the discount applied.
Check results you already have → · All 103 markers A–Z
Hondramin — frequently asked questions
What is Hondramin?
Hondramin (Cartilage cytamin — Khavinson-school organ peptide fraction, oral tablet) is a longevity & bioregulators research compound. A polypeptide fraction extracted from animal cartilage, 155mg per tablet. Cartilage is the one tissue in this line where the school moved past extracts to a named mechanism: short peptides reported to push mesenchymal stem cells toward a chondrogenic program, and a calf-cartilage polypeptide preparation tested on matching organotypic cultures at 0.01 to 100 nanograms per milliliter. Both are cell-culture results. Neither used this tablet, and the concentrations they used are the reason the comparison has to be written out rather than implied.
Where can I find Hondramin dosing and protocols?
Dosing, the reconstitution calculator and Coach Cam's full Hondramin protocol are available to members inside Skool. This public page covers what Hondramin is, how it works and the evidence.
What is the half-life of Hondramin?
Hondramin has an approximate half-life of Not characterized — no analytical method for this preparation has been published, which is part of what determines how often it's dosed.
What's the evidence behind Hondramin?
Current evidence level: No published study of this product. The cartilage literature in this school is cell culture, using defined synthetic peptides or a different preparation.. Hondramin is offered for research purposes only and is not an approved medicine.
What Hondramin is used for
Hondramin appears under 1 goal in the goal router.
Related Longevity & Bioregulators compounds
Where this goes next
The pages here are the frameworks. The protocols — the dosing, the order to correct things in, the week-by-week schedule and what to retest — are inside Skool.