The Gold Standard GH Secretagogue Stack
CJC-1295 (without DAC) + Ipamorelin is the most widely prescribed growth hormone secretagogue combination in US anti-aging and functional medicine clinics. It amplifies the body's natural GH production through complementary GHRH and GHRP pathways.
Unlike exogenous HGH (which suppresses natural production), secretagogues stimulate the pituitary to produce and release its own growth hormone, preserving the natural pulsatile rhythm that is critical for physiological effects.
How CJC-1295 (Mod GRF 1-29) Works
CJC-1295 without DAC (also called Mod GRF 1-29 or tetrasubstituted GRF 1-29) is a modified GHRH (growth hormone releasing hormone) analog. It tells the pituitary to amplify the size of each GH pulse.
Half-life: approximately 30 minutes. This short window creates a sharp, physiological GH pulse that mimics the body's natural nocturnal GH release pattern. Standard dose: 100-200 mcg per injection.
How Ipamorelin Works
Ipamorelin is a selective GHRP (growth hormone releasing peptide) that activates the ghrelin receptor (GHS-R1a) on the pituitary, triggering GH pulse initiation. Its key advantage: it does NOT elevate cortisol, prolactin, or appetite — making it the cleanest GHRP available.
Half-life: approximately 2 hours. Standard dose: 200-300 mcg per injection. When combined with CJC-1295, GH output is 2-5x greater than either peptide alone.
Optimal Timing and Protocol
Inject both peptides together SubQ, 30-60 minutes before bedtime on an empty stomach. Fasting for 2+ hours before injection is critical — insulin and blood glucose blunt GH release.
Standard protocol: 100-200 mcg CJC-1295 + 200-300 mcg Ipamorelin, 5 days on / 2 days off, for 8-12 week cycles. Monitor IGF-1 levels via blood work every 4-6 weeks.
Some clinics prescribe 2-3 injections daily (morning fasted, afternoon fasted, pre-bed). This maximizes GH pulses but requires strict fasting compliance.
Expected Results Timeline
Weeks 1-2: Improved sleep quality (deeper, more restorative sleep is the earliest and most consistent effect).
Weeks 4-6: Improved body composition (reduced visceral fat, increased lean mass). Better recovery from exercise.
Weeks 8-12: Skin quality improvements (collagen synthesis). Hair and nail growth. Sustained energy levels.
IGF-1 levels typically increase 50-150% from baseline within 4-8 weeks, confirming pituitary response.
Safety Monitoring
Required bloodwork: IGF-1, fasting glucose, HbA1c, and comprehensive metabolic panel every 4-6 weeks. GH elevation increases IGF-1, which can theoretically promote cell proliferation — important to monitor in individuals with cancer history.
Common side effects: mild water retention (first 2-3 weeks), occasional flushing at injection site, vivid dreams (a sign of improved deep sleep). These typically resolve within the first month.
⚕️ Medical Disclaimer: This article is for educational purposes only. Consult a qualified healthcare provider before using any peptide.