Hexarelin vs Ipamorelin

Name: Hexarelin vs Ipamorelin
Published: 2026-10-24

Updated Oct 24, 20269 sources

Key differences

1Prolactin and cortisol rises belong to the older GHRPs, hexarelin included; ipamorelin largely spares them.
2Guides use hexarelin for short 4 to 8 week blasts and ipamorelin for long-term use.
3Hexarelin gives the bigger GH pulse per dose, per guides.

Facts from each record, in the same words as their own pages.

Hexarelin and Ipamorelin side by side
	Hexarelin	Ipamorelin
Category	GH axis	GH axis
Evidence	Limited human data	Limited human data
FDA status	Not FDA approvedRegulatory	Not FDA approvedRegulatory
WADA	Prohibited	Prohibited
Half-life	About 55 minutes, per a 2026 review. The 1994 study it cites gave 55 minutes for the fall in blood GH after a dose, so the figure describes the GH response more than the peptide itself.Clinical study About 70 minutes in plasma, per guides.Competitor guide	About 2 hours after IV infusion in healthy men. Subcutaneous half-life has not been published.Clinical study
Routes	Subcutaneous injection, Intravenous (IV), Nasal	Subcutaneous injection
Forms	Vial (powder)	Not reported
Reported doses	50 to 300 mcg (subcutaneous injection) 1.5 mcg/kg (subcutaneous injection) 0.5 to 2 mcg/kg (intravenous (iv))	100 to 400 mcg (subcutaneous injection)
Most cited frequency	1 to 2 times a day	Once daily, before bed
Vial sizes	2 mg, 5 mgCompetitor guide	2 mg, 5 mg, 10 mgCompetitor guide
Mixed vial keeps	Fridge, 2 to 8 °C; never freeze.Competitor guide	Fridge, 2 to 8 °C.Competitor guide
Protocols on file	16	10

Doses shown are what sources report, labelled by origin. Not medical advice.

9 sources, each checked by date. Record updated Oct 24, 2026. Numbers are restated in our own words and labelled by where they came from.