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However, some mild side effects may occur, especially during the adjustment period or at higher doses: Headaches Temporary injection site irritation Lightheadedness Water retention (in rare cases) Mild tingling or numbness (from elevated IGF-1) Ipamorelin induced growth hormone release without elevating cortisol or ACTH levels, suggesting minimal off-target effects. Raun et al., European Journal of Endocrinology Compared to Other Peptides Unlike GHRP6 , which often causes intense hunger and spikes in prolactin , or GHRP2 , which can increase cortisol , Ipamorelin is more targeted and stable

First, get a documented BMI and comorbidity record from your primary care provider

A structured comparison provides a clear overview of how these three agents differ in mechanism and clinical outcomes

Available online at: (Accessed November 12, 2025)