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Hexarelin with Sermorelin

Mechanism-tag overlap and published literature for Hexarelin and Sermorelin, pulled verbatim from each Kalios compound profile. Kalios is a literature reference, not a recommendation.

Mechanism overlap

Mechanism tags are verbatim labels on each compound's profile. Generic tags ("peptide", "small-molecule", "research-chemical") are excluded from this overlap view. Tags are descriptive — not an inference about combined effect.

HEXARELIN SERMORELIN 2 UNIQUE TAGS 1 UNIQUE TAGS 0 SHARED
Hexarelin unique ghrpgrowth-hormone-releasing-peptide
Shared none
Sermorelin unique ghrh-analog-growth-hormone-secretagogue

Co-administration notes from the literature

Verbatim summary text pulled from each compound's profile data. Researchers studying Hexarelin and Sermorelin have published these mechanism-level observations. Not a co-administration recommendation.

Evidence level: mechanistic only

Classical GHRH + GHRP combination. Synergistic GH pulse; the short-duration hexarelin pulses plus sustained GHRH effect produce a larger combined GH release than either alone.

Quick facts

Hexarelin

RouteSubQ / IV / IM / IN / oral
Half-life~70 min (plasma)
FDA statusNot approved; Category 2
WADABanned (S2)
Full Hexarelin profile →

Sermorelin

RouteSubQ (nightly) / IV (diagnostic)
Half-life~10–12 min (plasma)
FDA statusApproved 1997; discontinued 2008 (commercial)
WADABanned (S2)
Full Sermorelin profile →

Literature table

Classified references from each compound profile. Click a column header to sort. Click a PMID to open PubMed. Findings are quoted verbatim from each profile's literature_summary; nothing here is added or interpreted.

Year Compound Source Finding
2004HexarelinFrieboes RM, Antonijevic IA, Held K, Murck H, Pollmächer T, Schuld A, Steiger A. Hexarelin decreases slow-wave sleep and stimulates the secretion of GH, ACTH, cortisol and prolactin during sleep in healthy volunteers. Psychoneuroendocrinology. 2004;29(6):728-739. PMID: 15177700. PMID 15177700human study
2003HexarelinBroglio F, Gottero C, Benso A, Prodam F, Destefanis S, Gauna C, Maccario M, Deghenghi R, van der Lely AJ, Ghigo E. Effects of ghrelin on the insulin and glycemic responses to glucose, arginine, or free fatty acids load in humans. J Clin Endocrinol Metab. 2003;88(9):4268-4272. PM… PMID 12970297human study
1999HexarelinPopovic V, Damjanovic S, Micic D, Djurovic M, Petakov M, Dieguez C, Casanueva FF. Low dose hexarelin and growth hormone (GH)-releasing hormone as a diagnostic tool for the diagnosis of GH deficiency in adults: comparison with insulin-induced hypoglycemia test. J Clin Endocrinol… PMID 10443652human study
1999HexarelinGiordano R, Picu A, Broglio F, Bonelli L, Baldi M, Berardelli R, Ghigo E, Arvat E. Corticotropin-releasing effect of hexarelin, a peptidyl GH secretagogue, in normal subjects pretreated with metyrapone or RU-486. J Endocrinol Invest. 1999;22(9):617-622. PMID: 10516483. PMID 10516483human study
1994HexarelinImbimbo BP, Mant T, Edwards M, Amin D, Dalton N, Boutignon F, Lenaerts V, Wüthrich P, Deghenghi R. Growth hormone-releasing activity of hexarelin in humans. A dose-response study. Eur J Clin Pharmacol. 1994;46(5):421-425. PMID: 7957536. PMID 7957536human study
2000HexarelinTorsello A, Locatelli V, Melis MR, Succu S, Spano MS, Deghenghi R, Müller EE, Argiolas A. Differential orexigenic effects of hexarelin and its analogs in the rat hypothalamus: indication for multiple growth hormone secretagogue receptor subtypes. Neuroendocrinology. 2000;72(6):3… PMID 11146416preclinical, in vivo
1999HexarelinLocatelli V, Rossoni G, Schweiger F, Torsello A, De Gennaro Colonna V, Bernareggi M, Deghenghi R, Müller EE, Berti F. Growth hormone-independent cardioprotective effects of hexarelin in the rat. Endocrinology. 1999;140(9):4024-4031. PMID: 10465271. PMID 10465271preclinical, in vivo
2026HexarelinWADA. 2026 Prohibited List. Section S2 — Peptide hormones, growth factors, related substances and mimetics. World Anti-Doping Agency.regulatory / registry
2004HexarelinDemers A, McNicoll N, Febbraio M, Servant M, Marleau S, Silverstein R, Ong H. Identification of the growth hormone-releasing peptide binding site in CD36: a photoaffinity cross-linking study. Biochem J. 2004;382(Pt 2):417-424. PMID: 15285719. PMID 15285719research article
2002HexarelinBodart V, Febbraio M, Demers A, McNicoll N, Pohankova P, Perreault A, Sejlitz T, Escher E, Silverstein RL, Lamontagne D, Ong H. CD36 mediates the cardiovascular action of growth hormone-releasing peptides in the heart. Circ Res. 2002;90(8):844-849. PMID: 11988484. PMID 11988484research article
2000HexarelinChen C. Growth hormone secretagogue actions on the pituitary gland: multiple receptors for multiple ligands? Clin Exp Pharmacol Physiol. 2000;27(5-6):323-329. PMID: 10779119. PMID 10779119research article
1999HexarelinImbimbo BP, Greco F, Marchiaro F, Mantovani V, Rocchi R, Ongini E. The effects of dose, nutrition, and age on hexarelin-induced anterior pituitary hormone secretion in adult patients on maintenance hemodialysis. Nephron. 1999;82(2):147-156. PMID: 10199757. PMID 10199757research article
2012SermorelinBaker LD, Barsness SM, Borson S, Merriam GR, Friedman SD, Craft S, Vitiello MV. Effects of growth hormone-releasing hormone on cognitive function in adults with mild cognitive impairment and healthy older adults: results of a controlled trial. Arch Neurol. 2012;69(11):1420-1429.… PMID 22869065human study
1999SermorelinPrakash A, Goa KL. Sermorelin: a review of its use in the diagnosis and treatment of children with idiopathic growth hormone deficiency. BioDrugs. 1999;12(2):139-157. PMID: 18031173. PMID 18031173human study
1996SermorelinGhigo E, Aimaretti G, Gianotti L, Bellone J, Arvat E, Camanni F. New approach to the diagnosis of growth hormone deficiency in adults. Eur J Endocrinol. 1996;134(3):352-356. PMID: 8616536. PMID 8616536human study
2020SermorelinIshida J, Saitoh M, Ebner N, Springer J, Anker SD, von Haehling S. Growth hormone secretagogues: history, mechanism of action, and clinical development. JCSM Rapid Commun. 2020;3(1):25-37.mechanism / discovery
2025SermorelinWADA. 2025 Prohibited List. Section S2 — Peptide hormones, growth factors, related substances and mimetics. World Anti-Doping Agency.regulatory / registry
2006SermorelinWalker RF. Sermorelin: A better approach to management of adult-onset growth hormone insufficiency? Clin Interv Aging. 2006;1(4):307-308. PMID: 18046908. PMC2699646. PMID 18046908research article
2003SermorelinMerriam GR, Schwartz RS, Vitiello MV. Growth hormone-releasing hormone and growth hormone secretagogues in normal aging. Endocrine. 2003;22(1):41-48. PMID: 14662999. PMID 14662999research article
1997SermorelinKhorram O, Laughlin GA, Yen SS. Endocrine and metabolic effects of long-term administration of [Nle27]growth hormone-releasing hormone-(1-29)-NH2 in older men and women. J Clin Endocrinol Metab. 1997;82(5):1472-1479. PMID: 9141535. PMID 9141535research article
1996SermorelinThorner M, Rochiccioli P, Colle M, et al. Once daily subcutaneous growth hormone-releasing hormone therapy accelerates growth in growth hormone-deficient children during the first year of therapy. Geref International Study Group. J Clin Endocrinol Metab. 1996;81(3):1189-1196. PM… PMID 8772599research article
1992SermorelinCorpas E, Harman SM, Piñeyro MA, Roberson R, Blackman MR. Growth hormone (GH)-releasing hormone-(1-29) twice daily reverses the decreased GH and insulin-like growth factor-I levels in old men. J Clin Endocrinol Metab. 1992;75(2):530-535. PMID: 1379256. PMID 1379256research article
1992SermorelinDuck SC, Schwarz HP, Costin G, et al. Subcutaneous growth hormone-releasing hormone therapy in growth hormone-deficient children: first year of therapy. J Clin Endocrinol Metab. 1992;75(4):1115-1120. PMID: 1400880. PMID 1400880research article
1985SermorelinVance ML, Kaiser DL, Evans WS, et al. Pulsatile growth hormone secretion in normal man during a continuous 24-hour infusion of human growth hormone releasing factor. Evidence for intermittent somatostatin secretion. J Clin Invest. 1985;75(5):1584-1590. PMID: 2860118. PMID 2860118research article

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Frequently asked

Have Hexarelin and Sermorelin been studied together?

Researchers have published mechanistic-level co-administration discussion of Hexarelin and Sermorelin. No human co-administration trials are catalogued in the Kalios profiles. The pair page lists each compound's classified literature; full citations sit on each individual profile.

What mechanisms do Hexarelin and Sermorelin share?

Hexarelin and Sermorelin do not share a specific mechanism tag on their Kalios profiles. They appear on the same pair page because at least one profile lists the other in its co-administration data.

What is the FDA status of Hexarelin and Sermorelin?

Hexarelin: Not approved; Category 2. Sermorelin: Approved 1997; discontinued 2008 (commercial). FDA-status text is pulled verbatim from each compound profile. See /fda-pcac-2026.html for the broader FDA Pharmacy Compounding Advisory Committee context.

Where can I find the full research on Hexarelin and Sermorelin?

Full citation lists, dosing tables from the literature, reconstitution data, and the FDA / WADA status are on the individual compound profiles: the Hexarelin profile and the Sermorelin profile. The Kalios Stack Research Tool hub lists every compound covered.

Last updated: April 2026