Thyreogen
Thyroid Extract Bioregulator · Thyroid Cytomax · Тиреоген
Thyreogen is the Cytomax thyroid complex. It is not levothyroxine, not liothyronine, and not Bonothyrk (parathyroid). English-language “Thyreogen V2” bottles are a later commercial fingerprint (mass-spec marketing), not a Khavinson 1990s paper.
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.
Compound card
- Sequence
- Thyroid gland peptide complex (mixture, not a single CAS)
- Class
- Khavinson Cytomax capsule complex (Thyroid gland)
- Formula
- Polypeptide extract (Thyroid tissue <10 kDa)
- Status
- Not FDA-approved · research use
How it works
Thyreogen (A-2) is a Cytomax natural polypeptide extract from the thyroid gland of young calves - the second in Khavinson's A-Series, reflecting its central role in metabolism and whole-body regulation. The thyroid produces T4 (thyroxine) and T3 (triiodothyronine) - hormones that regulate metabolic rate, body temperature, heart rate, cognitive function, and gene transcription in virtually every cell type. Hypothyroidism affects an estimated 4–10% of adults globally, with subclinical thyroid dysfunction (normal TSH but impaired tissue T3 conversion) far more prevalent and largely undiagnosed.
Thyreogen delivers short peptide signals (<10 kDa) from bovine thyroid tissue. These peptides enter thyroid follicular cell nuclei to reactivate transcription of: thyroglobulin (the precursor protein from which T3 and T4 are cleaved), TPO (thyroid peroxidase - the enzyme iodinating thyroglobulin to make T3/T4), sodium-iodide symporter (NIS, responsible for iodine uptake), and TSH receptor gene expression. This is a restorative mechanism - Thyreogen tells thyroid follicular cells to re-express the genes for making thyroid hormone more efficiently.
Critically, Thyreogen does not provide exogenous T3 or T4. It works upstream, at the gene expression level, to restore the thyroid's own capacity. In Khavinson's system, Thyreogen (A-2) is paired with Endoluten (A-8, pineal) since the hypothalamic-pituitary-thyroid axis is deeply integrated with circadian rhythm - TSH follows a circadian pattern (peaking at night), and melatonin from the pineal gland modulates TRH secretion from the hypothalamus.
Source: PMID: 15677927
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
Thyroid peptide bioregulation is follicular-cell identity and the transcription of the hormone-making machinery - still not T4 in a bottle. Thyreogen is the complex on the 21. There is no dedicated thyroid cytogen on the 12-SKU NPCRIZ cytogen poster (Testagen and Epitalon get secondary-thyroid mentions in English blogs; that is not the same as a thyroid cytogen SKU).
PSI has public mass-spec posts about Thyreogen vs “V2” diversity. That is brand analytics on capsule contents. Useful as a buyer warning about copycat V2 labels. It is not our IP and not a reason to paste their chromatograms.
Caveats
Thyroid 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. TSH/free T4 still rule. Hyperthyroidism is not a DIY peptide.
Full 41-map: Khavinson bioregulators index · Bioregulator stacks
Research Use Cases
- ✓Thyroid Cytomax identity
- ✓Not T3/T4 synthesis or Hashimoto management
Dosing
| Phase | Dose | Frequency | Notes |
|---|---|---|---|
| Mini-Course / General Preventive (1 box) | 2 capsules (20 mg) | Once daily for 10 days, 30 min before meals | Standard Khavinson mini-course (20 caps). Repeat every 6 months. Morning dosing preferred to align with natural TSH rhythm. Combine with Endoluten (A-8) for the complete hypothalamic-pituitary-thyroid axis reset. |
| Full Monthly Course (Thyroid Support) | 2 capsules (20 mg) | Twice daily for 30 days (120 caps = 2× 60-cap boxes) | Bi-annual 30-day courses for subclinical hypothyroid patterns, post-thyroiditis recovery, or metabolic slowdown in aging. Core thyroid-metabolic stack: Thyreogen (A-2) + Endoluten (A-8) + Suprefort (A-1, pancreas) for comprehensive metabolic axis support. |
| Intensive / Thyroid Restoration Protocol | 2 capsules (20 mg) | Twice daily, repeated monthly | For Hashimoto's thyroiditis (as complement to existing care), borderline hypothyroidism, or post-ablation supportive protocol. Mandatory physician oversight. Not a replacement for levothyroxine or anti-thyroid medications. Max: 4 caps/day (40 mg). |
Administration
Thyreogen: Not a research vial vs Oral capsule
- No dedicated cytogen on the 12-SKU NPCRIZ poster (none on the 12-SKU poster - Bonothyrk is parathyroid, different gland). Do not invent one.
- There is no pharmaceutical-extract SKU that is this capsule in a syringe.
- There is no dedicated thyroid cytogen on the 12-SKU poster. Do not relabel Testagen or Epitalon as a thyroid vial. Bonothyrk is parathyroid. Do not stop Synthroid for a capsule.
- Thyreogen 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.
- Official form for Thyreogen: swallow the capsule with water. No reconstitution step and no 5 mg cake.
- Thyroid Cytomax. English “Thyreogen V2” bottles are later mass-spec marketing, not a 1990s Khavinson paper. Not levothyroxine.
- Course-based (10–30 days, a few times a year in manufacturer folklore), not a daily forever drug.
- Thyroid 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.
Timeline
Who it is for
Subclinical Hypothyroidism / Thyroid Aging
LowRestores thyroid follicular cell gene expression for thyroglobulin, TPO, and NIS. Works upstream to improve the gland's own T3/T4 production capacity.
Hashimoto's / Autoimmune Thyroid Support
LowUsed as complementary support alongside conventional Hashimoto's management. The epigenetic restoration mechanism may help preserve remaining functional thyroid tissue. Always physician-supervised in autoimmune contexts.
Safety & Considerations
Natural glandular extract (Cytomax) from bovine thyroid tissue, <10 kDa. Contains no T3, T4, or TSH. Meets European/Russian veterinary standards. Physician oversight required for anyone on thyroid medication. Generally recognized as safe.
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
- 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
Thyreogen is a Cytomax capsule complex from Thyroid gland. 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
Do not stop indicated thyroid medication because a capsule page exists.
Appears in goal guides
Goal guides are maps, not clinic protocols. A mention here is not a treatment plan.
Frequently Asked Questions
Oral capsule or injection?▼
Thyreogen vs Bonothyrk vs levothyroxine?▼
What is Thyreogen V2?▼
Hashimoto’s treatment?▼
Reconstitution?▼
Can I take Thyreogen if I'm on levothyroxine?▼
Is Thyreogen safe for Hashimoto's?▼
References
- 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
- Khavinson VKh “"Peptide bioregulators - a new class of geroprotectors".” Bulletin of Experimental Biology and Medicine (2002). PMID: 12677266
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Get Thyreogen from Vita-Stream - a distributor for Khavinson-line oral capsules. No reconstitution math on a Cytomax bottle.
Affiliate link · Full review