Hexarelin

Human Research

Hexarelin

One of the most potent synthetic GHRP compounds. Researched for GH release, muscle growth, and notably for cardioprotective effects.

SubQ injectionGrowth HormoneBody CompositionCardiovascular

Dose

100-200 mcg

Route

SubQ injection

Cycle

Commonly discussed in research for 8-12 weeks

Storage

Refrigerated (2-8°C) away from light

What is Hexarelin?

Hexarelin is a synthetic hexapeptide that acts as a potent secretagogue of growth hormone (GH), stimulating its release from the anterior pituitary gland. It functions by activating the growth hormone secretagogue receptor (GHSR-1a), also known as the ghrelin receptor. Beyond its robust GH-releasing properties, research highlights its direct cardioprotective effects, which appear to be independent of GH release and are mediated through its binding to the CD36 receptor in cardiac tissue. This makes Hexarelin a subject of interest not only for its anabolic potential but also for its implications in cardiovascular health, particularly in scenarios following cardiac injury. It is one of the most potent synthetic GHRP compounds studied.

Key Benefits

  • Powerful GH release
  • Muscle growth support
  • Cardioprotection
  • Fat reduction
  • Post-heart attack research

Mechanism of Action

  • Potent GHRP-receptor agonist
  • Stimulates GH release
  • Binds CD36 receptor in heart for cardioprotection

Best For

  • Advanced GH research
  • Cardiovascular research
  • Body composition

Body Systems

EndocrineCardiovascularMusculoskeletal

🐾 Griffin Says...

Hexarelin is the powerful one in the GHRP family, but power comes with trade-offs. It raises cortisol and prolactin unlike the cleaner ipamorelin. The cardioprotection research is genuinely interesting though. Not a beginner peptide.

Molecular Information

Molecular weight

872.03 g/mol

Length

6 amino acids

Type

Synthetic Growth Hormone Releasing Peptide (GHRP)

Amino acid sequence

His-D-2-Methyl-Trp-Ala-Trp-D-Phe-Lys-NH2

H-His-D-2-MeTrp-Ala-Trp-D-Phe-Lys-NH2. The D-amino acids enhance resistance to enzymatic degradation.

Pharmacokinetics

Time to peak

15-30 minutes

Half-life

2 h

Time to clear

Approximately 10-12 hours

DoseEstimated plasma concentration12 h

Various pharmacological studies on GHRPs

Research Indications

  • Potent GH Release

    Hexarelin is recognized as one of the most potent synthetic GHRPs, effectively stimulating the pulsatile release of growth hormone from the pituitary gland through GHSR-1a activation.

  • Mechanism of Action

    Acts as a ghrelin mimetic, binding to the ghrelin receptor to stimulate GH release, often more potently than endogenous ghrelin.

Research Protocols

GoalDoseFrequencyRoute
General GH Release and Body Composition100-200 mcg2-3 times dailySubcutaneous injection
Maximizing Pulsatile GH Release100 mcg3 times daily, spaced evenly (e.g., morning, afternoon, before bed)Subcutaneous injection
Cardioprotective StudiesVariable, often 200 mcg1-2 times dailySubcutaneous injection
Initial Assessment of GH Response50-100 mcgSingle dose or once dailySubcutaneous injection
Combination Protocols for Enhanced GH/IGF-1 Axis100 mcg2 times daily (often combined with a GHRH analog)Subcutaneous injection

Timing protocols often attempt to maximize the pulsatile release of GH and minimize potential desensitization of the GHRP receptors.

Peptide Interactions

  • CJC-1295 / Mod GRF 1-29 (GHRH analogs)

    Combining Hexarelin with GHRH analogs (like CJC-1295 or Mod GRF 1-29) is commonly discussed in research for a synergistic increase in GH release, as they act via different mechanisms to stimulate the pituitary.

    Synergistic
  • Somatostatin (Growth Hormone Inhibiting Hormone)

    Somatostatin inhibits GH release. Hexarelin works to counteract this inhibition, but direct interaction or co-administration is not a standard research protocol as it would nullify Hexarelin's primary action.

    Avoid
  • Exogenous Growth Hormone

    While not directly counterproductive, administering exogenous GH alongside a GHRP like Hexarelin might obscure the interpretation of the GHRP's specific effects on endogenous GH secretion and feedback loops.

    Monitor Combination
  • Insulin

    GH can have effects on glucose metabolism and insulin sensitivity. While not a direct interaction, individuals with pre-existing metabolic conditions or those also administering insulin should monitor blood glucose levels closely.

    Use Caution
  • Glucocorticoids (e.g., Dexamethasone)

    Glucocorticoids are known to blunt GH secretion. Their co-administration might reduce the effectiveness of Hexarelin in stimulating GH release, requiring careful consideration in research protocols.

    Use Caution

How to Reconstitute

  1. 1Gather Hexarelin vial, bacteriostatic water for injection, and sterile syringes.
  2. 2Remove the plastic cap from the Hexarelin vial to expose the rubber stopper.
  3. 3Clean the rubber stopper of the Hexarelin vial and the bacteriostatic water vial with alcohol wipes.
  4. 4Draw the desired amount of bacteriostatic water (e.g., 1 mL) into a sterile syringe.
  5. 5Slowly inject the bacteriostatic water into the Hexarelin vial, directing it down the side of the glass to avoid direct impact on the lyophilized powder.
  6. 6Gently swirl the vial to facilitate dissolution. Do not shake.

Reconstitute with bacteriostatic water for injection. Avoid vigorous shaking to prevent peptide degradation.

What to Expect

  • Weeks 1-2: Initial observations may include enhanced sleep quality and increased appetite, consistent with GH-releasing effects.
  • Weeks 3-6: Users might begin to note improvements in recovery from physical activity, potentially an increase in lean muscle mass, and reduction in body fat, if combined with appropriate diet and exercise.
  • Weeks 7-12: More pronounced changes in body composition, including further muscle growth and fat loss, are commonly discussed in research contexts. Cardioprotective effects are studied over similar or longer durations.
  • Post-cycle: A return to baseline GH secretion is expected, with some retention of gains if proper post-protocol measures are considered.
  • Consistent usage in research protocols over several weeks is typically needed to observe significant changes.

Side Effects & Safety

EffectFrequencySeverity
Increased cortisolCommonMild
Increased prolactinCommonMild
Water retentionCommonMild
Increased appetiteVery CommonMild

Ready to calculate your dose? Use Griffin's Peptide Calculator 🐾

Open Calculator

Peptides discussed here are for research purposes only. Nothing on this page is medical advice. Always consult a qualified professional before making health decisions.