A focused reading guide

CJC-1295 DAC human research

Use the original source to resolve the exact long-acting molecule before interpreting findings. Search matches do not establish formulation identity.

Browse the studies

Your reading lens

Keep these questions in mind

Do not transfer long-acting CJC-1295 findings to no-DAC / Mod GRF 1-29.
Distinguish hormone exposure measurements from functional outcomes.
Check whether the abstract provides actual amounts or only ascending-dose descriptions.

The reading list

Explore the studies

Selected from the completed-summary collection, not a systematic review or exhaustive literature search. Human reports appear first; reviews and preclinical work retain their labels.

Human2005-12-13

Prolonged stimulation of growth hormone (GH) and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults.

Two randomized, double-blind trials compared long-acting CJC-1295 with placebo, measuring growth hormone, IGF-I and drug-processing characteristics.

Limitations to keep in view

No author-stated limitations were available in the abstract. The reported endpoints were hormone levels and pharmacokinetics, not demonstrated muscle gain or recovery benefits.

Read study summary

Preprint2026-04-24

Evaluation of Research Grade Peptides Marketed Directly to Consumers Reveals Extensive Variability in Purity and Measured Abundance

This preprint analyzed an independent public testing dataset to assess purity, measured peptide abundance, and endotoxin contamination in gray-market research peptides, and compared costs with pharmaceutical alternatives.

Limitations to keep in view

The authors caution that consumer-directed third-party testing captures only a small fraction of the safety profile relevant to people injecting these preparations.

Read study summary