GHRP-6

Growth Hormone Releasing Peptide 6

Evidence & Status

  • Preliminary / Experimental
  • Preliminary

At a Glance

A growth hormone-releasing peptide studied for its ability to stimulate growth hormone secretion and, notably, to strongly stimulate appetite — a property that has attracted research interest in muscle wasting and cachexia contexts.

Plain English

Researchers study GHRP-6 because it acts on the ghrelin receptor to stimulate growth hormone release and also produces a significant increase in appetite. Scientists are particularly interested in the appetite-stimulating mechanism as it relates to conditions where loss of appetite and muscle mass is a serious concern, such as cancer-related cachexia or severe illness. It is one of the earlier growth hormone secretagogues and has contributed significantly to scientific understanding of how ghrelin receptors function.

Overview

An early synthetic growth-hormone-releasing hexapeptide studied in experimental human and animal research. It is not FDA-approved, and its short-term pharmacodynamic effects do not establish clinical benefit or a treatment regimen.

Research Summary

Experimental studies in healthy men found that the GHRP-6 sequence can stimulate growth-hormone secretion, and preclinical work supports a receptor mechanism distinct from GHRH. These observations are historical and mechanistic; they do not establish clinical efficacy, long-term safety, or a use protocol.

Research Areas

  • GH release
  • Appetite stimulation & cachexia
  • Muscle wasting
  • Wound healing
  • Cardioprotection

Safety & Risks

Serious Risks

  • Experimental endocrine and appetite effects have been reported; long-term safety and clinical outcomes have not been established

Reported Side Effects

  • Significant hunger increase (most common)
  • Cortisol elevation
  • Prolactin increase
  • Water retention
  • Fatigue
United States
Research only
United Kingdom
Research only
Australia
Research only
Canada
Research only

Citations & Sources