Explore sermorelin reconstitution trends, most common dosages, and BAC water volumes based on real-world WPA calculator data from peptide researchers.
As a GHRH-mimicking peptide typically administered in nightly subcutaneous injections, sermorelin requires precise dose calculation. See the most common dose targets, vial sizes, and BAC water volumes researchers select when setting up their sermorelin reconstitution protocol.
Sermorelin holds an unusual place in the GH-secretagogue family — it is one of only two GHRH analogs ever to have carried an FDA approval (the other being tesamorelin), and the molecule that defined the modern GHRH stimulation test. Sermorelin is GHRH (1-29) NH2, the synthetic acetate salt of the first 29 amino acids of native human growth-hormone-releasing hormone, the same backbone every "Modified GRF 1-29" and CJC-1295 analog is built on. The pivotal product was Geref (Serono), approved by the FDA for pediatric growth hormone deficiency in the 1990s and used clinically through the early 2000s — both as a daily subcutaneous treatment and as a single-dose intravenous diagnostic agent in the GHRH stimulation test, where a measured GH response to an exogenous GHRH bolus distinguishes pituitary GH-axis dysfunction from hypothalamic dysfunction. S.
Sermorelin is a growth-hormone-releasing-hormone (GHRH) analog most often sourced for GH-axis and age-related "somatopause" research, frequently stacked with ipamorelin. It ships as a lyophilized powder you reconstitute with bacteriostatic water before use.
Sermorelin binds the GHRH receptor on pituitary somatotrophs to stimulate endogenous pulsatile GH release. Because the GH response is rate-limited by somatostatin tone and pituitary reserve, the negative-feedback architecture remains intact, in contrast to direct recombinant-hGH replacement.
Pediatric GHD trials supported the original approval; subsequent investigator-initiated work has examined sermorelin in age-related GH decline, adult somatopause, and as a less-suppressive alternative to recombinant hGH. The molecule is now widely compounded at 503A pharmacies for off-label adult use.
Sermorelin has a reported half-life of ~10–20 min, and the dose intervals researchers model most often fall around once daily (before bed). Sermorelin is gone within an hour. It works as a discrete pulse that triggers endogenous GH release — no systemic buildup, so consistency of timing matters more than dose accumulation. It is catalogued under Muscle Peptides on WPA.
1,105 Sermorelin reconstitution calculations have been logged by the WPA community. The most common dose entered is 300mcg (291 calculations). The most common bacteriostatic water volume is 2mL. The most popular vial size is 10mg (555 sessions). The most common dosing frequency is daily (7x/week) (118 logged protocols), followed by 5x/week (68).
These figures come from anonymized WPA peptide calculator sessions.
All figures shown are aggregated from anonymized calculator inputs and are provided strictly for independent laboratory research and educational purposes. They are community usage statistics — not dosing recommendations, and not medical advice.