A to Z / Growth hormone

CJC-1295 / Ipamorelin Blend

Also known as the GH stack, CJC/Ipa.

Best known for The single most-prescribed peptide combination in clinics

Evidence★☆☆☆☆

Safety dataLargely unknown

Route Injectable (subcutaneous)

United StatesNeither component approved

AustraliaBoth components S4 + Appendix D cl.5: possession without authority illegal

as at 16 September 2026

What it is

A compounded combination of CJC-1295 and ipamorelin in one vial. Each component has early pharmacological studies, and the combination itself has no trials yet. It is the most commonly dispensed peptide product in anti-ageing clinics, and people search for it as a single product rather than as two compounds.

What the full entry covers

The book carries the rest of this entry:

Where the research stands, with every claim cited
What people commonly ask, and what the research shows so far
Dosing in four labelled bands, described and not recommended
Side effects, serious risks, cautions and interactions
Questions to discuss with your doctor
How it compares with CJC-1295 (with DAC), Ipamorelin, Mod GRF (1-29), Sermorelin

Related entries

CJC-1295 (with DAC)Half of the classic clinic growth hormone stack · Evidence ★★☆☆☆
IpamorelinThe "clean" growth hormone secretagogue · Evidence ★★☆☆☆
Mod GRF (1-29)Often confused with CJC-1295, and a different drug · Evidence ★★☆☆☆
SermorelinThe GHRH analogue once approved, now compounded · Evidence ★★★★☆

A certificate of analysis tells you what is in a vial. The evidence rating above tells you whether the compound has been shown to work in humans. Neither answers the other's question. How to read a certificate of analysis.

This page describes what is known and not known about CJC-1295 / Ipamorelin Blend. It is not medical advice and not a recommendation to use it.