Compounds studied for gut, 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)…
BPC-157 is a synthetic 15-amino-acid peptide derived from a protein found in gastric juice, studied chiefly in animal models for effects on tissue repair — the gastrointestinal…
KPV is the anti-inflammatory C-terminal tripeptide of α-MSH — the same hormone behind the melanotan and PT-141 peptides, but stripped of all melanocortin-receptor activity (no…
Larazotide (AT-1001) is a synthetic octapeptide and a first-in-class "tight-junction regulator" — the first drug ever aimed at intestinal permeability, the "leaky gut" concept.
Apelin is an endogenous peptide and the natural ligand of the APJ receptor, a G-protein-coupled receptor closely related to the angiotensin II receptor.
B7-33 is a designed single-chain peptide derived from the B-chain of H2 relaxin, built to keep relaxin's anti-fibrotic activity while shedding the difficulties of the full…
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.