Thymalin
The original calf-thymus extract behind the Khavinson bioregulator lineage — a natural polypeptide complex, rather than the single defined dipeptide that later research (Vilon) distilled from it.
Not currently stocked by KYIN Peptides, but available to order — see availability below.
What Is Thymalin?
Thymalin is a polypeptide complex — a mixture of several distinct thymic peptides, rather than a single defined sequence — extracted from calf thymus tissue. It was developed by Vladimir Khavinson and Vyacheslav Morozov at the St. Petersburg (formerly Leningrad) Institute of Bioregulation and Gerontology starting in the 1970s, as the original preparation in what later became a broader family of short "bioregulator" peptides derived from specific organ tissues. It is proposed to restore T-cell mediated immunity, normalize the ratio of T-helper to T-suppressor cells, and enhance the phagocytic activity of neutrophils and macrophages.
Research Focus
Thymalin shares its research lineage and broad target — immune function in aging — with Vilon, though the two are meaningfully different in form: Vilon is a later, synthetic two-amino-acid dipeptide (Lys-Glu) developed as a minimal defined fragment intended to capture Thymalin's proposed active core in a single, reproducible molecule, whereas Thymalin itself remains the original multi-peptide natural extract. See our Healing & Recovery research overview for how it fits alongside KYIN's stocked recovery-focused peptides, or how Vilon, Cartalax, and Pinealon extend the same Khavinson-lineage research into other organ-specific targets.
Clinical & Preclinical Trial Data
The key clinical citation for Thymalin (Khavinson & Morozov, Neuroendocrinology Letters, 2003) assessed the geroprotective effects of Thymalin together with Epithalamin (the pharmaceutical form of Epitalon) in 266 elderly and senior subjects observed over 6–8 years. Homeostasis restoration was accompanied by a 2.0–2.4-fold decrease in acute respiratory disease incidence, and mortality during the observation period was 2.0–2.1-fold lower in the Thymalin-treated group. This research comes from the same Khavinson-affiliated program behind Vilon, Epitalon, Cartalax, and Pinealon, and has not been independently replicated outside that body of Russian research. Thymalin is approved in Russia for immune restoration but has not been evaluated or approved by the FDA or other Western regulators.
Availability
Thymalin is not part of KYIN Peptides' standard catalogue, but it is available to order — contact us directly and we'll source it for you.
Thymalin questions
What is Thymalin?
Thymalin is a polypeptide complex — a mixture of several distinct thymic peptides — extracted from calf thymus tissue, developed by Vladimir Khavinson and Vyacheslav Morozov at the St. Petersburg Institute of Bioregulation and Gerontology starting in the 1970s. It is proposed to restore T-cell mediated immunity and normalize the T-helper to T-suppressor cell ratio.
How is Thymalin different from Vilon?
Thymalin is the original natural extract — a complex mixture of multiple thymic peptides isolated directly from calf thymus tissue. Vilon is a later, synthetic two-amino-acid dipeptide (Lys-Glu) from the same research program, developed as a minimal defined fragment intended to capture Thymalin's proposed active core in a single, reproducible molecule.
What evidence exists for Thymalin?
The key clinical citation (Khavinson & Morozov, Neuroendocrinology Letters, 2003) assessed Thymalin and Epithalamin (Epitalon's pharmaceutical form) together in 266 elderly and senior subjects over 6–8 years, reporting a 2.0–2.4-fold decrease in acute respiratory disease incidence and a 2.0–2.1-fold decrease in mortality in the Thymalin-treated group. This research comes from the same Khavinson-affiliated program behind Vilon, Epitalon, Cartalax, and Pinealon, and has not been independently replicated outside that body of Russian research.
Does KYIN Peptides sell Thymalin?
Not as part of our standard catalogue, but yes — it's available to order. Contact us directly and we'll source it for you.
Interested in sourcing Thymalin?
Contact us and we'll help you source it, or browse our stocked recovery-focused peptides.