Discover ipamorelin dosage trends, reconstitution volumes, and vial size preferences from real-world WPA peptide calculator sessions.
Ipamorelin is a selective growth hormone secretagogue and GHRP known for its clean GH release profile with minimal side effects. This data shows the dose amounts, vial sizes, and bacteriostatic water volumes researchers most commonly select when setting up their ipamorelin reconstitution protocol.
" The Novo Nordisk team that developed the molecule designed it specifically to solve a problem that had dogged GHRP-2 and GHRP-6 through the 1990s: those earlier GHRPs released growth hormone effectively, but they also raised cortisol, prolactin, and aldosterone, producing a downstream stress-axis and fluid-balance signature that complicated their use. Raun et al. characterized ipamorelin as the first selective GHRP that released GH at the expected magnitude while leaving those other axes essentially untouched — a "selective" profile in the same sense that beta-1-selective beta-blockers were a step-change over the original non-selective generation.
Ipamorelin is a selective growth-hormone-releasing peptide (GHRP) most often sourced for GH-axis research, usually stacked with a GHRH analog like CJC-1295. It ships as a lyophilized powder you reconstitute with bacteriostatic water before use.
Ipamorelin binds the growth-hormone-secretagogue receptor (GHS-R1a) on pituitary somatotrophs and on the arcuate nucleus, mimicking endogenous ghrelin to stimulate GH release. Selectivity for GH over ACTH/cortisol is the principal distinguishing feature relative to other ghrelin mimetics.
Ipamorelin advanced into a Phase 3 program for post-operative ileus run by Helsinn (registered as NCT00672373 / NCT00672711) before being discontinued for failing primary endpoints in 2012. Outside that program, published research is limited to characterization studies (Raun et al., Eur J Endocrinol 1998) and combination work with GHRH analogs such as CJC-1295 / sermorelin.
Ipamorelin has a reported half-life of ~2 hours, and the dose intervals researchers model most often fall around once daily (before bed). Short half-life — each daily dose clears well before the next, so the effect is per-pulse rather than steady-state. Many users dose multiple times per day to extend the daily GH pulse window. It is catalogued under Muscle Peptides on WPA.
2,723 Ipamorelin reconstitution calculations have been logged by the WPA community. The most common dose entered is 200mcg (554 calculations). The median dose across all sessions is 250mcg. The most common bacteriostatic water volume is 2mL. The most popular vial size is 10mg (1,797 sessions). The most common dosing frequency is daily (7x/week) (227 logged protocols), followed by 5x/week (105).
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.