Endogenous orexigenic peptide hormone (research and clinical contexts)
Lenomorelin
The endogenous gut-brain peptide that stimulates GH release and appetite; studied in cachexia and diagnostic research.
- Evidence:
- Moderate human evidence
- Status:
- Investigational
- Reviewed:
- 2026-08-03
Also known as: Lenomorelin, Growth hormone secretagogue hormone
What is Lenomorelin?
The endogenous gut-brain peptide that stimulates GH release and appetite; studied in cachexia and diagnostic research.
This profile is educational. It organizes publicly discussed research context for Lenomorelin and related naming aliases — it is not a treatment guide.
Proposed mechanism
Binds GHS-R1a on pituitary and hypothalamus, triggering GH release and appetite stimulation.
Mechanism language on PepGuide describes how researchers discuss pathways. Proposed mechanisms can change as evidence evolves.
Current research notes
Human evidence grade: Moderate human evidence
Preclinical evidence grade: Strong human evidence
Ghrelin is the natural ligand for the ghrelin receptor. Synthetic mimetics (MK-677, anamorelin) derive from this biology. Native ghrelin studied in cachexia and gastric motility. Human evidence is strong for physiology; therapeutic use of native ghrelin is limited.
Key uncertainties
- Therapeutic utility vs synthetic agonists
Research areas being studied
- Appetite regulation
- GH physiology
- Cachexia
- Gastroparesis
Being studied for a topic is not the same as proven benefit in that topic. Prefer primary literature for study design, endpoints, and limitations.
Safety & side-effect notes
Reported or discussed adverse effects
- Hunger
- GI effects
Additional risks & considerations
- Appetite stimulation
- Glucose effects
Regulatory status
Investigational
Regulatory framing here is educational and can lag policy changes. Check official sources for current status.
Frequently asked questions
What is Lenomorelin?
The endogenous gut-brain peptide that stimulates GH release and appetite; studied in cachexia and diagnostic research.
How does Lenomorelin work (proposed mechanism)?
Binds GHS-R1a on pituitary and hypothalamus, triggering GH release and appetite stimulation.
What is Lenomorelin being researched for?
Lenomorelin has been discussed in research contexts including: Appetite regulation, GH physiology, Cachexia, Gastroparesis.
What does current evidence say about Lenomorelin?
Moderate human evidence. Ghrelin is the natural ligand for the ghrelin receptor. Synthetic mimetics (MK-677, anamorelin) derive from this biology. Native ghrelin studied in cachexia and gastric motility. Human evidence is strong for physiology; therapeutic use of native ghrelin is limited.
What safety considerations are noted for Lenomorelin?
Reported or discussed considerations include: Hunger; GI effects; Appetite stimulation; Glucose effects. This is educational information, not medical advice.
References & sources
- Kojima M et al. (1999). Ghrelin: discovery and physiological role — Nature. Evidence type: human.
Prefer interactive tools? Open the PepGuide library entry for Lenomorelin or ask PepGuide AI.
Educational and research information only. PepGuide does not sell or prescribe peptides, diagnose conditions, or provide personalized medical advice. Evidence summaries may include early-stage, animal, or limited human research — none of that is a substitute for primary literature or clinician guidance.