Independent reference & toolkit 100 compounds graded · Last reviewed June 2026

Compare · GH secretagogue

GHRP-6 vs Hexarelin

Both are gh secretagogue compounds. Here's how they line up on the evidence — graded the same way.

GHRP-6Hexarelin
Evidence 6/10 6/10
ClassGH secretagogueGH secretagogue
SummaryAn old growth-hormone-releasing peptide that reliably raises GH and appetite in humans, but whose marketed muscle, fat-loss, and disease claims lack solid trials.A synthetic ghrelin-mimicking peptide that reliably spikes growth hormone in small studies, but was never approved and is banned in sport.
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GHRP-6

GHRP-6 is one of the oldest lab-made peptides designed to nudge the body into releasing growth hormone. The basics of what it does in people are genuinely well understood: it raises growth hormone (GH, a hormone that helps the body grow and repair tissue), and it makes people hungry. What is…

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Hexarelin

Hexarelin is a lab-made peptide (a short chain of amino acids) that copies what the hunger hormone ghrelin does: it tells the body to release a quick, short burst of growth hormone (GH). Small human studies in the 1990s showed it does this dependably. But every one of those trials was tiny, brief,…

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