Hexarelin vs Ipamorelin

A detailed comparison to help you understand the differences and choose the right peptide for your research goals.

Hexarelin

Hexarelin is a potent synthetic hexapeptide growth hormone secretagogue. It provides the strongest GH release among GHRPs but is associated with rapid desensitization of receptors.

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Ipamorelin

Ipamorelin is a selective growth hormone secretagogue that stimulates the release of growth hormone from the pituitary gland without significantly affecting cortisol or prolactin.

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Side-by-Side Comparison

Aspect	Hexarelin	Ipamorelin
Dose Range	100 mcg–300 mcg	100 mcg–300 mcg
Frequency	2x daily	2x daily
Cycle Length	8–12 weeks	8–12 weeks
Route	subcutaneous	subcutaneous
Mechanism	Acts as a ghrelin mimetic with high potency at the GHS receptor. Provides powerful GH release but receptor desensitization occurs faster than with other GHRPs, requiring cycling.	Acts as a ghrelin mimetic, binding to the ghrelin receptor (GHS-R) in the pituitary to stimulate GH release. Highly selective with minimal effect on other hormones.
Typical Dosage	Typical dosing: 100-200mcg administered 2-3 times daily for 4-6 weeks, followed by an equal off period to allow receptor resensitization.	Typical dosing ranges from 200-300mcg administered 2-3 times daily, often combined with CJC-1295.
Administration	Subcutaneous injection. Cycling is essential to maintain effectiveness. Often used in short bursts rather than continuous protocols.	Subcutaneous injection. Best results when administered fasted or before sleep. Often stacked with GHRH peptides.
Side Effects	Water retention, cortisol and prolactin increase, hunger (moderate), tingling, and potential blood pressure effects.	Generally well-tolerated. May cause mild headaches, lightheadedness, or increased hunger initially.
Best For	Muscle Growth Recovery & Healing	Muscle Growth Fat Loss Recovery & Healing Sleep Quality