Peptilex – The Peptide Encyclopedia
- 34 peptides – from semaglutide to BPC-157 – in one book
- An evidence grade (A–E) and the key studies for every peptide
- Where each one stands in 2026 – US, EU and Switzerland
Hormones & growth
GHRP-2, GHRP-6 & hexarelin
- Type
- First-generation synthetic growth hormone–releasing peptides
- Main use or focus
- Muscle gain, appetite, recovery
Key studies from the book
Review of how growth hormone–releasing peptides were developed and how they release growth hormone in animals and people.
Bowers CY – Cellular and Molecular Life Sciences, 1998
All key studies, risks and open questions are in the book.
Research at a glance
All papers1,052
Human studies480
Animal studies only496
Randomized trials82
Meta-analyses & systematic reviews0
Source: PubMed and ClinicalTrials.gov via the Peptilex study database
Go deeper
Full profile in the book
What it is, how it acts, the key studies, risks and open questions.
Registered trials
ClinicalTrials.gov · name in study title · ongoing first
No registered trial yet on ClinicalTrials.gov.
Latest key papers
PubMed · newest first
- 2016
Human RCTZhao HQ et al. · Journal of Animal SciencePMID 26812312
- 2013
Differential pulsatile secretagogue control of GH secretion in healthy men
Human RCTNorman C et al. · American Journal of Physiology. Regulatory, Integrative and Comparative PhysiologyPMID 23485864
- 2012
Human RCTZhao H et al. · PeptidesPMID 22868212
- 2011
Human RCTVeldhuis JD et al. · American Journal of Physiology. Regulatory, Integrative and Comparative PhysiologyPMID 21795635
- 2009
Determinants of GH-releasing hormone and GH-releasing peptide synergy in men
Human RCTVeldhuis JD et al. · American Journal of Physiology. Endocrinology and MetabolismPMID 19240251
- 2008
Human RCTPaulo RC et al. · J Clin Endocrinol MetabPMID 18073313
- 2007
Human RCTVeldhuis JD et al. · American Journal of Physiology. Regulatory, Integrative and Comparative PhysiologyPMID 17686882
- 2005
Joint mechanisms of impaired growth-hormone pulse renewal in aging men
Human RCTVeldhuis JD et al. · J Clin Endocrinol MetabPMID 15811926