At the testicular level, the GH promotes the growth and development of the gonad, in childhood and puberty, and stimulation of gametogenesis and production of steroid hormones, in puberty and reproductively mature period
In sensitive individuals, sustained elevation may cause gynecomastia or reproductive effects These hormonal effects are generally not observed at doses of 100 mcg or below Theoretical/Long-Term: Potential effects on glucose metabolism and insulin sensitivity with prolonged use As with all GH-elevating compounds, theoretical concern regarding promotion of growth in undiagnosed malignancies Water retention and tingling typically diminish within the first few weeks as the body adapts

Key pharmacological characteristics include: Short half-life: Approximately 10-20 minutes Pulsatile stimulation: Mimics the bodys natural GH release pattern Self-limiting mechanism: The pituitarys negative feedback system prevents excessive GH production Peak activity during sleep: When administered before bed, sermorelin enhances the natural nocturnal GH surge A clinical study published in the Journal of Clinical Endocrinology & Metabolism demonstrated that sermorelin administration increased GH secretion and IGF-1 levels in older adults with documented age-related GH decline, with improvements in body composition and sleep quality (Vittone et al., 1997, JCEM )
Another study replicated the results when researchers evaluated the IGF-1 effects on muscle damage in mice