Hexarelin is a synthetic growth hormone releasing peptide (GHRP) used to stimulate GH secretion. It is one of the most potent GHRPs available, with research applications in GH deficiency, cardiac protection, and anti-aging. Unlike ipamorelin, hexarelin raises cortisol and prolactin alongside GH, which limits how long it can be used continuously. Most protocols cap hexarelin cycles at 12 weeks before a break.
How does hexarelin compare to ipamorelin?
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Both hexarelin and ipamorelin are GHRPs that stimulate GH release via ghrelin receptors. Hexarelin is significantly more potent but less selective — it raises GH more aggressively but also increases cortisol and prolactin. Ipamorelin is selective for GH secretion only, making it more suitable for long-term use. For short-term, maximum GH stimulation (e.g., injury recovery), hexarelin is preferred. For ongoing protocols, ipamorelin is the standard choice.
