What Is CJC-1295?
Category: Peptide
A synthetic analog of growth hormone releasing hormone (GHRH). Available in two forms: with DAC (long-acting, dosed weekly) and without DAC/Mod GRF 1-29 (short-acting, dosed 2-3x daily).
Detailed Explanation
CJC-1295 is a synthetic peptide analog of Growth Hormone Releasing Hormone (GHRH). It comes in two forms: CJC-1295 with DAC (Drug Affinity Complex), which has an extended half-life of 6-8 days allowing weekly dosing, and CJC-1295 without DAC (also known as Mod GRF 1-29), which has a short half-life of about 30 minutes requiring multiple daily doses. Both versions stimulate the pituitary gland to release growth hormone in a pulsatile manner.
Practical Context
CJC-1295 without DAC (Mod GRF 1-29) is most commonly combined with a GHRP like Ipamorelin for synergistic growth hormone release. This combination is considered the gold standard for GH optimization. The no-DAC version provides a more natural, pulsatile GH release pattern, while the DAC version creates more sustained elevation. Both should be taken on an empty stomach for maximum effect.
Frequently Asked Questions
Should I use CJC-1295 with or without DAC?
Without DAC (Mod GRF 1-29) provides more natural pulsatile GH release and is the preferred choice for most researchers. With DAC provides convenience of less frequent dosing but creates more sustained (less natural) GH elevation.
Why combine CJC-1295 with Ipamorelin?
CJC-1295 (GHRH) and Ipamorelin (GHRP) work through different but complementary pathways. Together, they produce a stronger GH pulse than either alone, similar to pressing the gas pedal and releasing the brake simultaneously.
Related Peptides
- CJC-1295 (no DAC) - A GHRH analog that stimulates growth hormone release without the Drug Affinity Complex. (Dosage | Calculator)
- CJC-1295 (with DAC) - A GHRH analog with Drug Affinity Complex for extended half-life. (Dosage | Calculator)
- Ipamorelin - A selective GH secretagogue with minimal effect on cortisol or prolactin. (Dosage | Calculator)
- Sermorelin - A GHRH analog that naturally stimulates the pituitary to release growth hormone. (Dosage | Calculator)
Related Terms
- DAC (Drug Affinity Complex) - A chemical modification added to CJC-1295 that extends its half-life from minutes to about 8 days by binding to serum albumin in the blood.
- GHRH (Growth Hormone Releasing Hormone) - A category of peptides that amplify growth hormone pulses. Examples include CJC-1295 and Sermorelin. Most effective when combined with a GHRP.
- Secretagogue - A substance that promotes the secretion of a hormone. GH secretagogues stimulate the pituitary gland to release growth hormone naturally, unlike exogenous HGH which directly introduces the hormone.
- Half-Life - The time it takes for half of a substance to be eliminated from the body. Determines dosing frequency - shorter half-life peptides need more frequent dosing.