Home›Research›Compare›Ipamorelin vs MK-677
Peptide ComparisonIpamorelin vs MK-677
Both are GH / IGF Axis peptides.
Ipamorelin
NNC 26-0161
Half-life: 2 hours
470 providers listed
MK-677
Ibutamoren
Half-life: 24 hours
64 providers listed
MK-677 has a longer half-life than Ipamorelin, so it generally needs less frequent dosing.
Ipamorelin
Evidence
Half-life
2 hours
MK-677
Evidence
Half-life
24 hours
| Your goal | Better option |
|---|---|
| Stronger clinical evidence | Ipamorelin |
| Less frequent dosing (longer half-life) | MK-677 |
| Oral administration option | MK-677 |
| More provider options (470 vs 64) | Ipamorelin |
Research summary only — not medical advice. Consult a qualified provider before making any decisions.
Ipamorelin
MK-677
Ipamorelin
A new era of doping? Use of peptide and peptide-analog drugs in recreational and professional sport and bodyb…
Therapeutic Peptides in Aesthetic, Metabolic and Endocrine Conditions: Effects, Safety, Clinical Applications…
Injectable Peptides in Sports Medicine: A Structured Narrative Review of Evidence, Safety, and Antidoping Imp…
Prospective, randomized, controlled, proof-of-concept study of the Ghrelin mimetic ipamorelin for the managem…
+1 more
MK-677
Oral ghrelin receptor agonist MK-0677 increases serum insulin-like growth factor 1 in hemodialysis patients:…
Two-month treatment of obese subjects with the oral growth hormone (GH) secretagogue MK-677 increases GH secr…
About Ipamorelin
Ipamorelin binds to the ghrelin receptor (GHSR-1a) and stimulates dose-dependent GH release with a clean hormonal profile. Unlike GHRP-6 or hexarelin, it does not significantly stimulate appetite-related pathways or cortisol secretion at standard research doses. This selectivity makes it a frequently studied peptide for protocols where hormonal side-effect profiles are a consideration.
About MK-677
MK-677 mimics the action of ghrelin by binding to and activating the GHSR-1a receptor in the pituitary gland, stimulating pulsatile GH release. Its oral bioavailability distinguishes it from peptide-based GH secretagogues and its prolonged half-life results in sustained IGF-1 elevation. Research protocols have explored its effects on lean body mass, bone mineral density, and sleep architecture.
Information below reflects published research data only — not medical advice. Consult a qualified provider before use.
Ipamorelin
Under clinical review
Being verified by our medical team before we display contraindications for this peptide.
Research protocols routinely measure IGF-1 to track GH axis activity before and during use. Fasting glucose and insulin are monitored because GH elevation can reduce insulin sensitivity over time.
global — WADA
This compound falls under WADA Prohibited List category S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics), prohibited at all times for competing athletes.
sourceMK-677
Class-based (investigational)
Ipamorelin
CJC-1295
Research suggests Ipamorelin and CJC-1295 may produce enhanced growth hormone release effects when combined. CJC-1295 provides sustained GHRH receptor stimulation while Ipamorelin provides pulsatile ghrelin receptor stimulation — complementary pathways studied in GH secretion research.
Mod GRF 1-29
Research suggests Ipamorelin and Mod GRF 1-29 may produce enhanced growth hormone pulse effects when combined. Ipamorelin acts via ghrelin receptors (GHSR) while Mod GRF 1-29 acts via GHRH receptors — distinct pathways that research suggests may amplify GH secretion when activated together.
Sermorelin
Research suggests Sermorelin and Ipamorelin may produce complementary growth hormone release effects when combined. Sermorelin acts as a GHRH analogue via pituitary receptors, while Ipamorelin acts via ghrelin receptors — dual-pathway stimulation studied in GH optimization research.
Ipamorelin
MK-677
Where to source these peptides
Ipamorelin
470 listed
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Providers offeringMK-677
64 listed
Browse directory →
PeptideBase lists providers for educational research purposes only. Always consult a qualified healthcare professional before obtaining or using any peptide.
More GH / IGF Axis Comparisons
Browse all peptides →Educational research tools — not medical advice.
Cite this page
Data last updated July 20, 2026
Free to reference and republish with attribution to PeptideBase. Choose a format:
PeptideBase. (2026). Ipamorelin vs MK-677 — Per-mg Price Comparison. Retrieved July 22, 2026, from https://peptidebase.io/peptides/compare/ipamorelin/mk-677