Livagen
Liver & immune system Research only Animal studies Synthetic short peptide (Cytogen)
Also called KEDA peptide
A four-amino-acid Khavinson peptide associated with the liver, gut and immune cells. In lymphocytes from older adults it loosened tightly packed DNA (chromatin), which is proposed to switch back on genes that go quiet with age.
Evidence at a glance
- Evidence
- Animal studies — Not yet studied in people
- Status
- Research compound only
- Dosing
- No human study has set a dose
Cell culture only, one group.
What studies report
- Loosened condensed chromatin in lymphocytes from older adults, proposed to reactivate age-silenced genes
How it works
A Khavinson short peptide: at two to four amino acids it is small enough to pass through cell and nuclear membranes intact. The proposed mechanism is that it binds specific sites on nuclear DNA and changes which genes are switched on in its target tissue, rather than acting on a surface receptor the way most peptides do.
Where it acts
LiverThe library groups this compound under Liver & immune system. The diagram shows that target, not every tissue it reaches.
Illustrated

AI-generated subject illustration; not a depiction of the compound or evidence of its effects.
Why people take it
Reasons people seek it out — not a list of proven effects.
Status: Cell-culture data, mostly from one research group.
- Route
- Subcutaneous injection, or oral capsule depending on the preparation
- Sequence
- Lys-Glu-Asp-Ala
- Formula
- C18H31N5O9
- Molecular weight
- 461.5 g/mol
- CAS
- 195875-84-4
- Available as
- 20 mg
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Educational information only. Nothing here is medical advice, a dosing protocol, or a recommendation to use any compound. Most entries describe substances not approved for human use. Talk to a licensed clinician before acting on anything you read here. How to read these entries.