CJC-1295 / Ipamorelin

The Ipamorelin + CJC-1295 combination is the most widely used growth hormone peptide stack. These two peptides work through complementary mechanisms to produce GH pulses 3–5× baseline — mimicking the natural GH profile of a healthy 25-year-old.

How It Works

CJC-1295 is a GHRH (Growth Hormone Releasing Hormone) analog. It binds to GHRH receptors in the pituitary, priming it for increased GH release and amplifying the amplitude of natural GH pulses. When combined with Ipamorelin — a selective GHRP (Growth Hormone Releasing Peptide) — you get both the pulse trigger and the amplification simultaneously.

Critically, Ipamorelin is the most selective GHRP available. Unlike older GHRPs (GHRP-2, GHRP-6), Ipamorelin does not significantly elevate cortisol or prolactin, making it ideal for long-term use without the side effects common to other secretagogues.

Research-Backed Benefits

The combination produces measurable improvements in: - Body composition (lean mass gain + fat loss) over 12–24 weeks - Deep sleep quality and GH-dependent overnight recovery - Skin quality, hair thickness, and collagen density - Recovery speed from training and injury - Metabolic rate through GH-mediated lipolysis

The Right Protocol

The key insight: GH is released in pulses, and the largest pulse occurs during the first hours of deep sleep. Injecting before sleep in a fasted state (2+ hours after last meal) synchronizes the peptide-induced pulse with the body's natural GH secretion window, producing additive rather than competing effects.