How does Sermorelin work, according to the published research?
The laboratory work recorded here scans the 1-29 amide residue by residue and reports which positions are required for the fragment to release growth hormone from pituitary cells, which the authors describe as an analysis of the features important for receptor activation. A second laboratory publication reports that the peptide is cleaved by dipeptidyl peptidase IV to GRF(3-29)NH2, which it describes as inactivated. The human studies measured growth-hormone release and pharmacokinetics; none of them characterised receptor binding.
- The authors state that the combined results allowed an analysis of the structural features in the native peptide that are important for receptor activation, and that reinforcing amphiphilicity, helicity and peptide dipolar effects produced several more potent analogues. (Cervini et al., 1998, PMID 9513600)
- States that GRF(1-29)NH2 is degraded mainly by dipeptidyl peptidase IV in plasma, giving GRF(3-29)NH2, which the publication describes as inactivated. In rat intestinal brush-border membranes, gradient HPLC, mass balance analysis and inhibitor studies identified GRF(3-29)NH2 as the major metabolite of GRF(1-29)NH2, formed by the action of the same enzyme. (Bai et al., 1995, PMID 8583376)
What has published research on Sermorelin found, and what are its limits?
This page records 6 publications, reporting laboratory (in vitro) work in 2, human work in 4. Each is listed with its identifier under References.
Human studies represented: Schwartz et al., 2000, PMID 10905389; Vittone et al., 1997, PMID 9005976; Thorner et al., 1996, PMID 8772599; Wilton et al., 1993, PMID 8329825.
Evidence represented on this page: in vitro and human.
No animal research is represented.
The page reviews 6 published studies, and each figure is reported for the study that published it; results are not pooled across studies.
1 of these publications carries a note on whether it studied this exact material.
Every human figure on this page was recorded in a controlled study, under supervision, using material prepared for that study, in a population selected by its entry criteria. It is not the research material PepGenex supplies and no result here transfers to it.
Is Sermorelin approved by the U.S. FDA?
Drugs@FDA lists two approved applications for sermorelin acetate, and the products under both are listed as discontinued. PepGenex research materials are not those products, are not FDA approved, and are not for human or veterinary use.
Source: Drugs@FDA, Applications NDA 019863 and NDA 020443. Verified 2026-09-24.
What risks have published studies of Sermorelin reported?
2 published human studies on this page report adverse events or safety measurements. Each is listed with its publication in the adverse-events section of this page.
Trial events do not establish a complete safety profile.