Sermorelin
Also referred to as: GRF(1-29), GHRH(1-29)
A lab-made copy of the active part of the natural growth-hormone-releasing signal. One of the most commonly used GHRH peptides.
In plain terms: Sermorelin is a lab-made copy of the working part of the body's natural growth-hormone signal. It tells the pituitary gland to release growth hormone. It is one of the most commonly sold peptides in this group and has been used in medical settings.
- Name
- Sermorelin
- Aliases
- GRF(1-29), GHRH(1-29)
- Classification
- GHRH analog (peptide)
- Areas studied
- Growth-hormone signal, Growth hormone & IGF-1, GHRH
What it is
Sermorelin is a lab-made peptide matching the first 29 amino acids of natural GHRH — the part that does the actual work of telling the pituitary to release growth hormone. It is one of the more established peptides of its kind.
It has been used in medical research, including as a test of pituitary function.
Mechanism
Sermorelin plugs into the GHRH docking point on the pituitary gland, prompting it to make and release growth hormone in natural pulses. Because it works with the body's own release system, the pituitary's normal limits still apply.
Growth hormone then drives IGF-1, so the growth-hormone-to-IGF-1 chain is the system of interest.
Areas studied & investigated
The categories below summarize where Sermorelin appears in the research literature. They describe what the compound is studied for and investigated in — not approved uses, and not guidance for any kind of use.
Growth-hormone signal
Studied as a copy of the natural signal that triggers growth-hormone release.
Growth hormone & IGF-1
Looked at for effects on growth-hormone release and downstream IGF-1.
Pituitary testing
Has been used as a tool to test how well the pituitary gland responds.
GHRH peptide comparison
Often compared with other growth-hormone-signal peptides.
Research history
Sermorelin was developed as the active fragment of GHRH and has been studied since the 1980s, including use as a diagnostic tool for growth-hormone function.
State of the literature
Sermorelin has a peer-reviewed research record including some clinical use. Its use outside studied settings is not established.
What to keep in mind
Because Sermorelin works through the body's own release system, it is sometimes marketed as inherently "safer" or "more natural" than other approaches — but that framing skips over the fact that its use outside studied medical settings is not well established. Lean on the actual research rather than the "natural" marketing angle.
Research tools
Evaluating a Sermorelin batch for laboratory research? These free, research-use-only calculators help you work the numbers and read the paperwork: the reconstitution calculator solves vial concentration and draw volume, and the COA reader walks a certificate line by line. For how much and how often Sermorelin is commonly used, see the dosing guides.
Batch-tested with published COAs
See what a published COA looks like
Midwest Compounds does not currently list Sermorelin. Every compound it does sell is tested by an independent lab, with a batch-linked certificate of analysis you can check before you buy.
Citations
The summary above is drawn from published, peer-reviewed sources. Links open the abstract on PubMed, or the free full text on PubMed Central (PMC) where marked.
- Walker RF. Sermorelin: a better approach to management of adult-onset growth hormone insufficiency?. Clinical Interventions in Aging, 2006. Free full text PMC
- Prakash A, Goa KL. Sermorelin: a review of its use in the diagnosis and treatment of children with idiopathic growth hormone deficiency. BioDrugs, 1999. Abstract