Sermorelin
A synthetic analogue of the first 29 amino acids of endogenous growth hormone-releasing hormone (GHRH). Studied as a physiologically pulsatile GH stimulant with a well-characterised safety profile.
For laboratory and in vitro research purposes only. Not for human consumption.
What is Sermorelin?
Sermorelin is a synthetic analogue of growth hormone-releasing hormone (GHRH), corresponding to the first 29 amino acids — the biologically active N-terminal segment that retains full receptor binding capacity. It stimulates the pituitary gland to produce and release growth hormone through the body's own regulatory system, rather than introducing exogenous GH. Sermorelin is one of the most clinically studied GHRH analogues, with a well-characterized safety and efficacy profile from research spanning decades.
the natural ghrh pathway.
29 amino acids.
Sermorelin is the first 29 amino acids of endogenous GHRH — sufficient for full receptor binding and biological activity. It works through the body's own pituitary-regulated GH axis, keeping production under normal physiological feedback control. One of the most researched GHRH analogues in clinical literature.
How Sermorelin works in research models
Sermorelin corresponds to the bioactive N-terminal segment of GHRH, which is sufficient for full receptor binding and biological activity. It binds the GHRH receptor (GHRHR) on anterior pituitary somatotrophs, stimulating GH synthesis and pulsatile secretion. Because it works via the natural hypothalamic-pituitary axis, the downstream GH and IGF-1 responses remain subject to normal physiological negative feedback.
stimulates your own gh.
not a replacement.
Unlike exogenous GH administration, Sermorelin stimulates the pituitary to produce its own growth hormone — meaning the response remains subject to the body's own negative feedback control. Researchers studying age-related GH decline find this physiological distinction important.
Sermorelin: a better approach to management of adult-onset growth hormone insufficiency?
Clin Interv Aging · 2006 · PMID: 18046877
Human growth hormone and human aging.
Endocr Rev · 1993 · PMID: 8491155
Research protocols typically use Sermorelin at 0.2–0.3 mg/kg in preclinical models, often administered before sleep to align with natural GH pulsatility. It has a short half-life (~12 minutes) requiring frequency-matched dosing. Reconstitute with bacteriostatic water and store at 4°C.
You ask, we answer.
Both are GHRH analogues. Sermorelin is the natural 1–29 sequence with short half-life (~12 min). CJC-1295 (no DAC) adds modifications that extend half-life to ~30 minutes. CJC-1295 with DAC extends further to several days via albumin binding. Sermorelin is the closest to endogenous GHRH in structure and kinetics.
It operates differently — stimulating the pituitary to produce its own GH rather than providing exogenous GH. Research in adults with GH insufficiency has demonstrated increased endogenous GH secretion, but the response depends on intact pituitary somatotroph function.
Somatopause refers to the age-related decline in GH secretion that begins around age 30 and accelerates with aging. Research has examined whether GHRH analogues like Sermorelin can attenuate this decline by stimulating the pituitary — which typically retains some secretory capacity even in aging — rather than using exogenous GH replacement.
Sermorelin stimulates the pituitary to release the body's own growth hormone — it doesn't introduce exogenous GH. This means GH levels remain under normal physiological negative feedback control. Research suggests this produces a more physiological GH pattern compared to exogenous HGH administration, which bypasses the regulatory system entirely.
Research Use Only
All Rowan Peptides products are intended strictly for laboratory and in vitro research purposes. They are not approved by the FDA and are not intended for human consumption, veterinary use, or any therapeutic application. By purchasing, you agree to our Terms of Service and Indemnity Waiver. Rowan Peptides LLC operates as a chemical supplier only.
Sermorelin is one of the better-understood GHRH analogues for research purposes and Rowan's sourcing quality is evident. 5mg vial, clear lyophilized cake, reconstituted cleanly. The pituitary research angle is well presented on their site without going into claim territory.
Consistent with everything else I've ordered here. Quality is good across the board, which is the real thing you're looking for in a research vendor. Three stars for shipping time being a day longer than last time, otherwise five.
Good first order. Found Rowan through a longevity forum and after seeing how they do the testing transparency I felt comfortable. Shipping was fast, product was as described.
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