Crystagen
Glu-Asp-Pro · EDP · Immune Bioregulator Tripeptide · Кристаген
Crystagen is the synthetic immune cytogen Glu-Asp-Pro (EDP) on the NPCRIZ list - thymus/immunocompetent cells. It is not a colon peptide. English catalogs that print “gut” or Lys-Glu-Asp for Crystagen mixed it up with Vesugen (KED) or with a GI extract.
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
- EDP
- Class
- Khavinson cytogen (EDP)
- Formula
- Glu-Asp-Pro (EDP tripeptide)
- Status
- Not FDA-approved · research use
How it works
Crystagen is the synthetic immune cytogen Glu-Asp-Pro (EDP) on the NPCRIZ list - thymus and immunocompetent cells. It is not a colon peptide and it is not Lys-Glu-Asp (that sequence is Vesugen, KED, vessels).
Vilon (KE) is the thymus-specific dipeptide with the chromatin papers. Thymogen (EW) is the other immune dipeptide. Vladonix is the thymus Cytomax complex. Crystagen is the broader immune-cell motif in the school’s own telling. English catalogs that print “gut” mixed this ID with a GI extract or with KED.
Source: PMID: 12677266
Khavinson map
Canonical 41Used 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
Crystagen is one of the 12 cytogens Cytomed actually puts on the poster, labeled thymus/immune. Vilon (KE) is the older, more-cited thymic dipeptide. Thymogen (EW) is the other immune dipeptide with a Russian drug history. Crystagen is the EDP tripeptide aimed at a broader immunocompetent-cell set - marrow, spleen, circulating lymphocytes - while Vilon is the thymus-specific motif in the school’s own telling.
The colon error on our old details page was a real bug: someone assigned Lys-Glu-Asp and “colonic mucosa” to this ID. KED is Vesugen (vessels). Colon/GI is Stamakort’s aisle. We are not going to keep a wrong organ because a spreadsheet said so.
Sequence disputes exist in the wild (EDP vs TEG vs KED). We follow the NPCRIZ immune listing plus our database alias Glu-Asp-Pro, and we flag the dispute instead of pretending every vendor COA agrees.
English-language teachers (including public PSI writing) treat Crystagen as immune restoration, often stacked with Vilon. That pairing is in-school. Stacking Crystagen for “gut healing” is the bug reproducing itself.
Caveats
A defined sequence is not an FDA indication. Immune cytogens sit in a Russian experimental-gerontology literature with limited Western replication. “Oral bioavailability because PEPT1” is real peptide-transport biology; it is not proof this SKU treats the organ disease. Gray-market identity is a live problem - HPLC is the only way to know the vial is the sequence on the label. Autoimmune disease is a caution, not a target. This is not thymosin alpha-1 (Zadaxin).
Full 41-map: Khavinson bioregulators index · Bioregulator stacks
Research Use Cases
- ✓EDP identity vs Vilon vs Vladonix
- ✓Not a chronic-infection or NK-cell restoration protocol
Dosing
| Phase | Dose | Frequency | Notes |
|---|---|---|---|
| Khavinson Protocol | 1–2 capsules/day or 1–2 mg SC | Daily for 10–30 day courses, 1–2× per year | Immune cytogen. Not a GI course. Repeat 1-2x per year in the school’s cycling logic. |
Administration
Crystagen: oral vs SubQ
- Official Cytomed cytogen SKU is a swallowed capsule. No BAC water, no syringe.
- Matches how Cytomed ships the poster line.
- Nobody manufactures this as a sublingual tablet.
- Oral EDP is a tripeptide, so the PEPT1 conversation is at least biologically plausible, still not an immune indication.
- Capsule milligrams are not 1–2 mg SC. Do not convert a research-vial protocol into capsule counts by arithmetic theater.
- Empty-stomach timing is user-guide folklore plus PEPT1 logic, not a cited human PK study for this SKU.
- Crystagen is EDP for thymus / immunocompetent cells. It is not a colon peptide. KED is Vesugen (vessels). English catalogs that print “gut” or Lys-Glu-Asp on this ID mixed the bottles.
- Do not swallow this as IBD or “gut healing.” That organ bug is how wrong capsules get bought.
- Vial math is checkable if the COA matches the sequence on the label.
- Food timing is irrelevant for SubQ.
- Short pulsed courses match how the school used defined synthetics.
- Gray-market identity: HPLC is the only way to know the cake is EDP (Glu-Asp-Pro).
- Not a Western Phase 3. Russian experimental-gerontology literature is real and concentrated.
- Not a sublingual tablet and not a Cytomax complex.
- Crystagen is EDP for thymus / immunocompetent cells. It is not a colon peptide. KED is Vesugen (vessels). English catalogs that print “gut” or Lys-Glu-Asp on this ID mixed the bottles.
- This is not thymosin alpha-1 (Zadaxin). Autoimmune disease is a caution, not a target.
Timeline
Who it is for
Immune / thymic (research)
LowEDP immune cytogen. Not colon. Not Vesugen. Autoimmune disease is a caution, not a target.
Reconstitution
| Vial | Water | Concentration | Example dose |
|---|---|---|---|
| Lyophilized cytogen (if the SKU is a vial) | Follow the COA fill | Do the math | Capsules skip this step. Cytomax complexes are not this molecule. |
Change vial size or water volume? Open the reconstitution calculator.
Safety & Considerations
Research peptide. Russian clinical-protocol history is not an FDA indication. Not thymosin alpha-1. Sequence disputes exist - demand HPLC.
Regulatory & Legal Status
Not currently on the WADA 2026 Prohibited List. Policies may change - verify before competition.
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
- A defined sequence is not an FDA indication.
- Gray-market identity is a live problem. HPLC beats a blog table.
- Do not paste a sibling cytogen’s papers onto this SKU.
- This site will not treat the named organ disease from a peptide page.
Verdict
Crystagen is the synthetic EDP cytogen for Thymus / immunocompetent cells (not colon). Khavinson’s group published in this family. That is a concentrated literature, not a Western Phase 3. Capsules and vials are different SKUs.
Interactions & Contraindications
Autoimmune disease is a caution, not a target.
Synergies & Common Stacks
Two immune-aisle cytogens (EDP vs KE). Not a layered restoration regimen.
Frequently Asked Questions
Does Crystagen target the colon?▼
Oral capsule or injection?▼
Crystagen vs Vilon vs Thymogen vs Vladonix?▼
Sequence?▼
TA-1?▼
What does Crystagen do for the gut?▼
References
- Khavinson VKh et al. “Vilon/chromatin immune-cell work (neighbor peptide, not a Crystagen RCT).” Bulletin of Experimental Biology and Medicine (2003). PMID: 12677266
- Khavinson VKh et al. “Tissue-specific effects of peptides.” Bulletin of Experimental Biology and Medicine (2005). PMID: 15677927
- Khavinson VKh, Lin’kova NS, Tarnovskaya SI “Short peptides regulate gene expression.” Bulletin of Experimental Biology and Medicine (2013). PMID: 23888677
- Khavinson VKh, Morozov VG “Peptide regulation of aging: from experimental studies to clinical practice.” Advances in Gerontology (2003). PMID: 14523363
📚 Related Articles
Get Crystagen from Vita-Stream - a distributor for Khavinson-line oral capsules. No reconstitution math on a Cytomax bottle.
Affiliate link · Full review