CJC-1295 / Ipamorelin Stack
CJC-Ipa / GH Stack / Secretagogue Combination
The most commonly prescribed GH secretagogue combination in US longevity medicine. CJC-1295 provides GHRH stimulation while Ipamorelin provides ghrelin receptor stimulation — two complementary pathways for natural GH optimization.
Mechanism of action
CJC-1295 (without DAC) binds GHRH receptors on pituitary somatotrophs to stimulate GH production. Ipamorelin simultaneously binds GHS-R1a ghrelin receptors for selective GH release. The two mechanisms are synergistic — working through different receptor classes produces greater GH elevation than either alone, while preserving natural pulsatility.
Effects in the body
This combination is the gold standard approach to GH optimization because it uses two different receptor systems simultaneously. CJC-1295 tells the pituitary to make GH. Ipamorelin tells the pituitary to release it. Together they produce a natural GH pulse that aligns with sleep physiology and avoids the downsides of direct GH injection.
Pros & cons (from the literature)
- Synergistic GH elevation through dual receptor mechanisms
- Preserves natural pulsatile GH rhythm
- Most prescribed GH combination in US anti-aging medicine
- Well-characterized combined pharmacology
- Supports lean mass, fat reduction, sleep quality, and recovery
- Theoretical long-term GH-related cancer risk
- Water retention and joint discomfort at higher doses
- Both peptides require cold storage and careful handling
- Must inject — no oral form
- No Phase III trials in healthy adults for the combination
Protocol summary (from published research)
Dosing ranges reproduced from published research literature. Not a prescription, not medical advice.
FDA & regulatory status
Evidence base
Individual components have published human pharmacological data. CJC-1295: Teich et al. 2006. Ipamorelin: Raun et al. 1998. Combination widely used clinically. No specific Phase III combination RCT completed.
Primary research sources
Peer-reviewed literature referenced throughout this profile is drawn from PubMed, Cell Metabolism, and clinical trial registries cited in the evidence base above.
Expert perspective — Dr. Alex Tatem, Urologist
Dr. Alex Tatem is a board-certified Urologist and Men's Health Specialist who has studied peptides for 12 years. Videos featured for educational purposes. ThePeptide.expert is an independent platform.
Dr. Tatem covers the GH axis peptide category — explaining why stimulating natural GH production through secretagogues is considered safer than direct synthetic HGH administration.