Mod GRF 1-29

Sermorelin with four amino-acid swaps that make it last longer. Often sold as "CJC-1295 without DAC." Very little published research.

Evidence: Primarily preclinical research
Half-life: Not known
Sources: 2 cited

Is mod GRF 1-29 FDA-approved?

Not approved by the FDA. Products sold online as "research chemicals" aren't checked for purity, sterility or dose.

Is mod GRF 1-29 banned in sport?

Banned in sport by the World Anti-Doping Agency (WADA).

Overview

Mod GRF 1-29 is the peptide part of CJC-1295 without the albumin-binding hook. The swaps protect it from quick breakdown, so it should last longer than sermorelin but far less than CJC-1295 with DAC. Published research on this exact peptide is scarce.

How it works

It binds GHRH receptors in the pituitary and triggers a growth hormone pulse, like sermorelin.

How long does mod GRF 1-29 stay in the body?

Not well established in people.

What it's studied for

Growth hormone release (lab and animal studies)

Related: CJC-1295, GHRP-2, Ipamorelin, GHRP-6.

Sources

The studies and prescribing labels this page is written from.