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Growth Hormone Secretagogues
Research Chemical

Sermorelin / Ipamorelin Blend

Also known as: Sermorelin & Ipamorelin, Sermorelin + Ipamorelin Blend

A widely studied research blend combining the GHRH analog Sermorelin with the highly selective ghrelin-receptor agonist Ipamorelin. It is examined for clean, synergistic growth hormone release with minimal off-target effects.

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Mechanism of Action

Sermorelin (GHRH 1-29) stimulates the pituitary GHRH receptor to drive growth hormone synthesis and pulsatile release. Ipamorelin is a selective GHS-R1a (ghrelin) receptor agonist that triggers an additional GH pulse without meaningfully elevating cortisol, prolactin, or aldosterone, giving it a cleaner profile than older GHRPs. Acting on two separate receptors, the pair produces a synergistic GH response while preserving physiologic feedback and the natural pulsatile pattern.

Half-life
Mixed: Sermorelin ~10-20 minutes, Ipamorelin ~2 hours
Administration Routes
subcutaneous
Research Status
Research Chemical

Reported Benefits

  • Studied for synergistic and selective GH release
  • Investigated for minimal cortisol and prolactin elevation
  • Examined for improved lean mass and recovery
  • Researched for enhanced slow-wave sleep quality
  • Studied for IGF-1 elevation through natural pituitary signaling
  • Investigated for support of fat metabolism

Potential Side Effects

  • Injection-site redness or transient swelling
  • Mild water retention or tingling in extremities
  • Transient flushing or lightheadedness after injection
  • Mild headache or fatigue
  • Modest appetite increase

Common Dosing

In the research literature, blends are studied at approximately 100-300 mcg of each component per administration, 1-2 times daily, often pre-sleep or fasted. For research-use only; not personal medical advice.

The dosing information above is aggregated from research literature and anecdotal community reports for educational purposes only. It is not a recommendation, prescription, or medical advice. Peptides are sold as research chemicals only and are not intended for human use.

Contraindications

  • Active malignancy or history of cancer
  • Pregnancy or breastfeeding
  • Known hypersensitivity to GHRH or ghrelin-receptor analogs
  • Sermorelin: a review of its use in the diagnosis and treatment of children with idiopathic growth hormone deficiency

    1999

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  • Ipamorelin, the first selective growth hormone secretagogue

    1998

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  • Pharmacokinetic-pharmacodynamic modeling of ipamorelin, a growth hormone releasing peptide, in human volunteers

    1999

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  • GH responses to intravenous bolus infusions of GH releasing hormone and GH releasing peptide 2 separately and in combination in adult volunteers

    1995

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  • Sermorelin: a better approach to management of adult-onset growth hormone insufficiency?

    2006

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Ipamorelin is highly selective for the ghrelin receptor and, in research, releases GH without the significant cortisol, prolactin, or aldosterone increases seen with older peptides like GHRP-6.

In research contexts, the Sermorelin / Ipamorelin combination is frequently characterized as a foundational, low-side-effect GH secretagogue pairing.

PeptideChat is for educational and research purposes only. Nothing on this site constitutes medical advice. Peptides are sold as research chemicals only and are not intended for human use. These statements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease. PeptideChat is an independent educational resource — not a pharmacy, compounding, or 503A/503B outsourcing facility — and does not sell products or provide medical advice.