Compounds studied for immune & thymic, ranked by the strength of the evidence — strongest at the top, research-grade and disappointing below. Grades reflect the evidence, not marketing. This is a neutral reference; nothing here is a recommendation to use, and no compound is offered for sale.
Lactoferrin is an iron-binding glycoprotein of the transferrin family, found naturally in milk, saliva and tears, and available commercially mostly as bovine lactoferrin (bLF)…
Thymosin Alpha-1 (thymalfasin / Zadaxin) is a 28-amino-acid thymic immune-modulating peptide and one of the most clinically validated peptides in this register — approved in ~35…
Selank is a synthetic analog of the immune peptide tuftsin, developed in Russia (same institute and lead investigator as Semax) and approved there as a prescription anxiolytic…
Thymalin is a calf-thymus polypeptide complex and the founding compound of the Soviet/Russian "peptide bioregulator" school — the program (Khavinson & Morozov, 1970s) that also…
N-Acetyl Selank Amidate is Selank with two chemical modifications — an acetyl group added to the N-terminus and an amide at the C-terminus — marketed as a stronger,…
Thymulin (serum thymic factor, FTS) is a genuine thymic hormone — a nonapeptide that is biologically active only when bound to zinc, involved in T-lymphocyte differentiation and…
Epithalamin is a polypeptide extract of bovine pineal gland, developed from the 1970s by Vladimir Khavinson and colleagues at the St Petersburg Institute of Bioregulation and…
The Khavinson peptide bioregulators are a family of very short peptides — typically two to four amino acids — developed since the 1970s at the St Petersburg Institute of…
Ranking is by evidence grade (A–F), the same ceiling shown on each compound page — not by popularity or margin. No dosing, reconstitution, or administration is given anywhere on Vallydia. See each entry for its full evidence table and legal status by region.
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This site provides neutral scientific reference and sells only products lawful in your region. Nothing here is medical advice, a recommendation, or an offer to supply unapproved medicines. No dosing or administration is published for research compounds. Cosmetic peptides per Regulation (EC) 1223/2009. Unapproved injectable peptides are neither sold nor advertised in the EU (Directive 2001/83/EC, Title VIII). © 2026 Vallydia.