Growth hormone-releasing hormone (GHRH) analog peptide

CJC-1295

CJC-1295 is a synthetic growth hormone-releasing hormone (GHRH) analog developed by ConjuChem with drug affinity complex (DAC) technology for extended half-life. It is not FDA-approved for any indication; ConjuChem discontinued clinical development. It is widely used in research-chemical and telehealth contexts, frequently stacked with ipamorelin.

Evidence review Last reviewed 2026-07-01 Next review 2026-07-29

Evidence snapshot

Track claims and development history. Do not publish dosing, sourcing, or treatment instructions. Separate the single published pharmacokinetic study from community dosing protocols.

A published pharmacokinetic/pharmacodynamic study (Teichman et al., 2006, Journal of Clinical Endocrinology & Metabolism) showed that CJC-1295 increased GH and IGF-1 levels in healthy subjects for up to 6 days after a single dose — this is the primary peer-reviewed human data.

CJC-1295 was developed by ConjuChem Biotechnologies using drug affinity complex (DAC) technology to bind albumin and extend half-life from minutes to days; clinical development was discontinued and the compound was never submitted to FDA for approval.

Two forms exist in community discussions: CJC-1295 with DAC (extended half-life) and CJC-1295 without DAC (modification GRF 1-29); both are research-use-only and not FDA-approved.

Commonly stacked with ipamorelin (a GHS) in online protocols based on the theoretical rationale of combining GHRH and GHS pathways; this combination has no FDA-approved clinical data.

Tracked claims

CJC-1295 increases GH and IGF-1 levels in humans based on published pharmacokinetic data.

Evidence level: Peer reviewed

Sources: Journal of Clinical Endocrinology & Metabolism (PubMed)

Cite the Teichman et al. (2006) JCEM publication directly. The study was a single-dose pharmacokinetic study in healthy volunteers, not a clinical outcomes trial. Do not extrapolate to efficacy claims.

The CJC-1295 + ipamorelin stack is one of the most discussed peptide combinations online.

Evidence level: Community discussion

Sources: U.S. Food and Drug Administration

This combination is based on theoretical synergy between GHRH and GHS pathways but lacks clinical trial data for the combination. Track as a community protocol pattern.

Sources on this page

Source records are stored in the repo and linked from each claim.

Pharmacokinetics and Pharmacodynamics of CJC-1295, a Long-Acting GHRH Analog

Journal of Clinical Endocrinology & Metabolism (PubMed) · Peer reviewed · 2006-05-01 · accessed 2026-07-01

Teichman et al. (2006) pharmacokinetic study (PMID 16569233) showing that CJC-1295 increased GH and IGF-1 levels in healthy subjects for up to 6 days after a single dose. The primary published human data for CJC-1295.

Warning Letter: Gram Peptides

U.S. Food and Drug Administration · Primary regulatory · 2026-03-31 · accessed 2026-06-30

FDA warning letter discussing peptide products marketed online and the limits of research-use-only positioning.