IGF-1 LR3 vs Ipamorelin

Name: IGF-1 LR3 vs Ipamorelin
Published: 2026-10-23

Updated Oct 23, 202611 sources

Key differences

1Different targets. Ipamorelin raises your own GH through the pituitary; LR3 acts on the IGF-1 receptor directly.
2Ipamorelin is taken fasted; LR3 is taken with food or carbs.

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

IGF-1 LR3 and Ipamorelin side by side
	IGF-1 LR3	Ipamorelin
Category	GH axis	GH axis
Evidence	Animal data only	Limited human data
FDA status	Not FDA approvedRegulatory	Not FDA approvedRegulatory
WADA	Prohibited	Prohibited
Half-life	Not measured in humans. In rats it cleared about 10 times faster than native IGF-1. The 20 to 30 hour figure quoted online has no human source.Competitor guide	About 2 hours after IV infusion in healthy men. Subcutaneous half-life has not been published.Clinical study
Routes	Subcutaneous injection, Intramuscular injection	Subcutaneous injection
Reported doses	20 to 100 mcg (subcutaneous injection) 10 to 20 mcg (intramuscular injection)	100 to 400 mcg (subcutaneous injection)
Most cited frequency	Daily	Once daily, before bed
Vial sizes	1 mgCompetitor guide	2 mg, 5 mg, 10 mgCompetitor guide
Mixed vial keeps	Fridge, 2 to 8 °C.Competitor guide	Fridge, 2 to 8 °C.Competitor guide
Protocols on file	10	10

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

11 sources, each checked by date. Record updated Oct 23, 2026. Numbers are restated in our own words and labelled by where they came from.