Hexarelin: Dosage, Protocol, and Research Guide
Most potent synthetic growth hormone releasing peptide with cardiovascular benefits
Mechanism
Potent ghrelin receptor agonist with additional binding to CD36 receptors. Provides strongest GH pulse but can desensitize with continuous use. Also exhibits cardioprotective properties.
Protocol at a glance
| Starting dose | 100mcg |
|---|---|
| Maintenance dose | 100-200mcg |
| Maximum dose | 200mcg |
| Frequency | 1-2 times daily |
| Typical duration | 4-6 weeks with breaks |
| Route | Subcutaneous |
| Injection site | Abdomen or thigh |
| Timing | On empty stomach |
Side effects
- Cortisol increase
- Prolactin increase
- Water retention
- Receptor desensitization
Contraindications
- Active cancer
- Pregnancy
Protocol notes
- Most potent GHRP available
- Can desensitize receptors - use short cycles
- Use short cycles with breaks
- May have cardioprotective effects
- Increases cortisol and prolactin more than other GHRPs
Frequently asked questions
What is Hexarelin and how does it work?
Hexarelin is a synthetic growth hormone releasing peptide (GHRP) that functions as a ghrelin receptor agonist. Unlike growth hormone itself, Hexarelin stimulates your pituitary gland to produce and release its own GH. What makes Hexarelin unique is its dual receptor mechanism—it binds to both ghrelin receptors and CD36 receptors, making it the most potent GHRP available. This additional CD36 binding may contribute to cardioprotective properties beyond GH stimulation.
Why is cycling important with Hexarelin?
Hexarelin is the most potent GHRP available, which means it carries the highest risk of receptor desensitization with continuous use. When you use Hexarelin daily without breaks, your body's ghrelin receptors adapt and become less responsive—a phenomenon called tachyphylaxis. This is why research protocols recommend 4-6 week cycles followed by breaks. Cycling allows your receptors to reset between protocols, maintaining Hexarelin's efficacy on subsequent uses.
What are the standard dosing guidelines for Hexarelin?
Hexarelin dosing typically begins at 100 micrograms per injection. Maintenance doses range from 100-200 micrograms, administered 1-2 times daily via subcutaneous injection. The maximum recommended dose is 200 micrograms. For optimal effect, injections should be made on an empty stomach. Most research protocols use 4-6 week cycles with breaks to prevent receptor desensitization.
What side effects should I monitor with Hexarelin?
Hexarelin increases cortisol and prolactin more substantially than other GHRPs, making monitoring of these hormones important during research use. Common side effects include water retention, elevated cortisol, and elevated prolactin. These endocrine shifts are why short cycles with breaks are recommended—they allow these markers to normalize between protocols. If you have risk factors for elevated cortisol or prolactin, this should inform your decision to use Hexarelin.
Can Hexarelin be used with other peptides?
Research on Hexarelin stacking protocols remains limited in peer-reviewed literature. Given that Hexarelin is the most potent GHRP available and already carries significant effects on cortisol and prolactin, any combination with other peptides or compounds should be approached cautiously. Stack design would depend on your specific research goals and current physiology. Consulting published research on peptide compatibility and monitoring multiple endocrine axes simultaneously would be essential.
Who should not use Hexarelin?
Hexarelin is contraindicated in individuals with active cancer or during pregnancy. Because Hexarelin increases cortisol and prolactin significantly, people with conditions sensitive to these hormones should avoid it. Anyone with a personal or family history of cancer, hormonal sensitivities, or elevated baseline cortisol or prolactin should consult a licensed physician before considering Hexarelin research protocols.
What lab markers should I monitor while using Hexarelin?
Hexarelin significantly elevates cortisol and prolactin more than other GHRPs, making these the primary markers to monitor. You should establish baseline values before beginning a protocol and recheck them during use. IGF-1 levels may also be relevant depending on your research goals, as sustained GH elevation eventually increases IGF-1. Water retention effects suggest monitoring electrolytes and kidney function. Full hormone panels will provide the most complete picture of Hexarelin's systemic effects.
How is Hexarelin administered?
Hexarelin is administered via subcutaneous injection—the same method used for insulin or other peptides. Injection sites rotate between the abdomen and thigh to prevent lipohypertrophy (localized fat accumulation). For maximum efficacy, injections are timed on an empty stomach. Proper injection technique and site rotation are essential for consistent absorption and response.
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Educational reference only — not medical advice. Work with a qualified clinician.