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PreclinicalHealing / anti-inflammatory

B7-33

A single-chain mimetic of the H2 relaxin receptor (RXFP1) studied for antifibrotic effects in animal models of cardiovascular and renal disease.

CompoundB7-33
CategoryH2-relaxin mimetic peptide
ClassHealing and Anti-Inflammatory Peptides
Evidence tierPreclinical
WADA statusNot individually listed; verify current status if subject to testing
Sold on this siteNo — this is a reference database

Overview

B7-33 is catalogued here as a h2-relaxin mimetic peptide and graded at the "Preclinical" evidence tier. The evidence base for this compound is dominated by animal and cell-culture studies. Mechanism may be plausible; human benefit and safety are unestablished.

A single-chain mimetic of the H2 relaxin receptor (RXFP1) studied for antifibrotic effects in animal models of cardiovascular and renal disease.

Mechanism of Action

B7-33 activates RXFP1 in a biased fashion, mimicking selected downstream signaling of relaxin — a hormone associated with tissue remodeling and anti-fibrotic pathways — without replicating its full hormonal profile.

Research and Evidence

Published evidence is limited to rodent and cell models of fibrosis and vascular injury. No human trials have been reported.

Evidence in context: the Healing and Anti-Inflammatory Peptides class page collects the shared evidence themes and study-reading guidance for this category.

Safety and Side Effects

No human safety data exist; the compound is a research tool rather than a therapeutic candidate in clinical testing.

Educational notice: this entry describes published research and, where they exist, regulator labels. It is not medical advice and not a recommendation for use. Research-grade compounds have no verified human-safety data.

Frequently Asked Questions

What is the evidence tier of B7-33?

B7-33 is graded "Preclinical" on this site. The evidence base for this compound is dominated by animal and cell-culture studies. Mechanism may be plausible; human benefit and safety are unestablished.

Is B7-33 an approved medicine?

No. Preclinical means the compound has not reached universal regulatory approval; the tier description above explains exactly what level of evidence exists.

Where can I read the primary studies for B7-33?

The references section at the end of this entry links the key primary sources — regulator labels, trial registrations, and peer-reviewed papers. Our "How to Read a Peptide Study" guide explains how to evaluate them.

References

  1. ClinicalTrials.gov — search for B7-33 studies. [source]
EM
Dr. Elena Marsh, PhDMolecular Pharmacology · Lead Editor

Written and maintained by the editorial team. Medically reviewed by Dr. James Okafor, MD (Internal Medicine).

Evidence tier: Preclinical · Last reviewed: 2026-09-05 · Sources cited below.

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