Side-by-Side Comparison · 2026

GHRP-6 vs Sermorelin

GHRP-6 vs Sermorelin — mechanism, half-life, dosing, and research status compared. Which is right for your protocol?

GHRP-6
Growth Hormone

GHRP-6 is the original growth hormone releasing peptide, discovered by Cyril Bowers in the 1970s through systematic study of enkephalin analogs. It was the first molecule to reveal the existence of the ghrelin receptor pathway, predating the discovery of ghrelin itself....

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Sermorelin
Growth Hormone

Sermorelin is a synthetic analog of the first 29 amino acids of endogenous GHRH, retaining full biological activity at the GHRH receptor. It was FDA approved (Geref) for GH deficiency in children from 1997 until its voluntary market withdrawal in 2008 for commercial reasons - not...

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Key Parameters
Parameter GHRP-6 Sermorelin
Category Growth Hormone Growth Hormone
Research Extensively Studied Extensively Studied
Half-Life ~15–60 min ~10–20 min
Typical Dose 100–300 µg 200–500 µg
Frequency 2–3× daily Once daily (bedtime)
Route Subcutaneous Subcutaneous
FDA Status Not Approved Compounding Only

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Frequently Asked Questions
What is the difference between GHRP-6 and Sermorelin?
GHRP-6: GHRP-6 is the original growth hormone releasing peptide, discovered by Cyril Bowers in the 1970s through systematic study of enkephalin analogs. It was the first molecule to reveal the existence of th... Sermorelin: Sermorelin is a synthetic analog of the first 29 amino acids of endogenous GHRH, retaining full biological activity at the GHRH receptor. It was FDA approved (Geref) for GH deficiency in children from...
Which has a longer half-life, GHRP-6 or Sermorelin?
GHRP-6 half-life: ~15–60 min. Sermorelin half-life: ~10–20 min.
Can you stack GHRP-6 and Sermorelin?
GHRP-6 and Sermorelin are in the same category and used together in research protocols. Always consult relevant literature and follow appropriate guidelines.

For research use only. Not medical advice. ASCEND does not conduct or endorse any specific research protocol. Always consult relevant scientific literature and regulatory guidelines.