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CJC-1295 + Ipamorelin

CJC-1295 + Ipamorelin · CJC/Ipamorelin · GH Secretagogue Stack

C
Animal replicated
RouteInjectableGray-market only
C
Evidence grade: Animal replicated

Effect demonstrated in multiple animal studies; human data sparse or extrapolated. Grades summarize evidence quality, not whether a compound is appropriate, legal, or risk-free.

At a glance
What it is
GHRH Analog + Selective GHRP — The GH Secretagogue Stack — GH Secretagogue Stack, GHRH Analog, GHRP, Peptide.
Why people use it
GH and IGF-1 Elevation · Body Composition · Sleep Quality · Recovery and Tissue Repair · Metabolic Effects · Anti-Aging and Longevity
What the evidence supports
2-10x GH increase 6 days; IGF-1 1.5-3x for 9-11 days; multiple doses: 28 days elevated
If you only read one thing

The central tension resolved: the DAC vs no-DAC decision is the most consequential protocol choice in this chapter. CJC-1295 with DAC is convenient but produces a pharmacological profile fundamentally different from the synergistic pulse the combination is designed to create.

Published literature
0human trials2human studies2animal0in vitro
Evidence reality check
Human evidence
2 human studies
2 observational; RCT evidence not present in corpus.
Preclinical base
2 lab signals
2 animal; 0 in-vitro/mechanistic.
Best-supported use
GH elevation (CJC-1295 DAC, humans)
A grade · 2-10x GH increase 6 days; IGF-1 1.5-3x for 9-11 days; multiple doses: 28 days elevated. Biomarker outcome; not clinical endpoint trial; DAC form only
Indication map
Supported / plausible / speculative / avoid
Supported
GH elevation (CJC-1295 DAC, humans)
A grade · 2-10x GH increase 6 days; IGF-1 1.5-3x for 9-11 days; multiple doses: 28 days elevated. Biomarker outcome; not clinical endpoint trial; DAC form only
Supported
GH pulsatility preserved with CJC-1295 DAC
A grade · Pulsatile GH persists during continuous CJC stimulation; basal GH 7.5x higher. DAC form; sustained vs pulsatile question not resolved for outcomes
Supported
Ipamorelin selectivity (no ACTH/cortisol)
A grade · No ACTH/cortisol elevation even at 200x ED50 for GH. Animal (swine) study; confirmed in subsequent clinical use pattern
Supported
GHRH + GHRP synergy (5-10x GH pulse)
B grade · 5-10x GH pulse via dual pathway activation. Not specific to Ipamorelin; older GHRP-6 studies

CJC-1295 + Ipamorelin is the most clinically mature GH secretagogue combination available — not because it has the strongest controlled evidence base, but because it has the largest physician-supervised clinical use history of any peptide combination in this reference. Thousands of patients under medical supervision over years produced a consistent practical profile: sleep improvement within weeks, gradual body composition improvement over months, good tolerability, no HPTA suppression, and no PCT requirement. That clinical experience base is not a Phase 3 RCT. But it is real, it is large, and it is consistent.

The central tension resolved: the DAC vs no-DAC decision is the most consequential protocol choice in this chapter. CJC-1295 with DAC is convenient but produces a pharmacological profile fundamentally different from the synergistic pulse the combination is designed to create. CJC-1295 without DAC + Ipamorelin — the gold standard — preserves pulsatility, maintains receptor sensitivity, and maximizes the synergistic dual-pathway pulse that explains why the combination outperforms either compound alone. Most of the large-scale clinical prescriptions historically used the with-DAC form for compliance reasons. Most informed current practice prefers the without-DAC form for pharmacological reasons. Understanding why this distinction matters is the most important practical contribution of this chapter.

The strongest argument: the combination addresses the somatopause — the progressive age-related GH decline — through the body's own pituitary axis rather than bypassing it. It preserves the negative feedback mechanisms that prevent IGF-1 overshoot. It costs a fraction of exogenous HGH. The human clinical data on GH and IGF-1 elevation is Grade A. The clinical experience base from physician-supervised use is larger than any other peptide combination in this reference.

The strongest argument for caution: the combination has never been tested in a controlled body composition or quality-of-life trial. The benefits attributed to it — muscle gain, fat loss, sleep improvement, anti-aging — are based on GH physiology extrapolation and clinical experience, not RCT data for this specific stack. The cancer risk from chronic IGF-1 elevation in the target range is genuinely uncertain. The regulatory environment for CJC-1295 specifically (developmental drug classification) is more legally complex than other compounds in this reference. WADA explicitly bans both compounds.

Properties
Active malignancy: hard stopWADA S2✓ Human evidenceNot injectable
Half-life
CJC-1295 is a synthetic GHRH(1-29) analog with four amino acid substitutions that resist DPP-IV degradation, extending the base half-life from 7 minutes to approximately 30 minu…
Evidence
CAnimal replicated
What This Chapter Covers
Two compounds analyzed individually, then together: CJC-1295 (a GHRH analog, two forms) and Ipamorelin (a selective GHRP). The combination is the clinical standard. The individual compound analysis explains why it works and why the form of CJC-1295 you choose changes everything.
CJC-1295 Classification
Synthetic GHRH analog (Modified GHRH 1-29). Tetrasubstituted 29-30 amino acid peptide. Two forms: with DAC (Drug Affinity Complex, half-life ~6-8 days) and without DAC (Modified GRF 1-29, half-life ~30 minutes). These are different compounds with different pharmacokinetics and different clinical applications.
Ipamorelin Classification
Synthetic pentapeptide GHRP (Growth Hormone Releasing Peptide). Selective ghrelin receptor (GHS-R1a) agonist. The first selective GH secretagogue — stimulates GH without elevating ACTH, cortisol, or prolactin. Half-life ~1.5-2.5 hours, GH peak at 40-60 minutes.
THE CENTRAL DISTINCTION
CJC-1295 without DAC + Ipamorelin = the 'gold standard' combination producing a synergistic 5-10x GH pulse via two different receptor pathways. CJC-1295 with DAC produces sustained GH elevation for days — which is convenient but eliminates the pulsatile synergy with Ipamorelin. These are fundamentally different protocols with different physiological implications. Most clinical prescriptions historically used the with-DAC form. Most informed practitioners now prefer the without-DAC form for its more physiological pulsatile profile.
Human Evidence (CJC-1295 DAC)
Phase 2 human trials: single injection produced 2-10x GH increase sustained for 6 days; 1.5-3x IGF-1 elevation sustained 9-11 days. Multiple doses: IGF-1 elevated for up to 28 days. Grade A for GH/IGF-1 elevation. These are biomarker outcomes; body composition RCTs do not exist for this combination.
Human Evidence (Ipamorelin)
Raun et al. 1998: selective GH release without ACTH/cortisol elevation confirmed even at 200x the ED50 for GH release. Grade A for selectivity characterization. No Phase 3 human efficacy trial for clinical outcomes.
Synergy Evidence
GHRH + GHRP synergy producing 5-10x GH pulse established in human studies with older GHRPs (GHRP-6). The specific CJC-1295 without DAC + Ipamorelin combination has not been formally studied in a controlled human efficacy trial. The mechanism supports the synergy; the direct combination trial has not been run.
FDA Regulatory Status 2026
CJC-1295 is classified as a developmental drug — a stricter category than the PCAC-reviewed compounds. Ipamorelin maintains Category 1 status. The combination faces continued regulatory uncertainty. Physician-supervised compounding remains available through specific pathways in 2026.
WADA Status
BOTH compounds are explicitly banned under WADA S2 (Peptide Hormones, Growth Factors, Related Substances and Mimetics). GH secretagogues as a class are prohibited at all times. No TUE available. Hard stop for any athlete under anti-doping testing.
Primary Applications
GH optimization for anti-aging, body composition (lean mass, fat loss), sleep quality improvement, recovery acceleration, and age-related GH decline (somatopause). All community and clinical applications are off-label — no FDA approval for any indication.
Timing — Critical
The entire therapeutic rationale depends on timing. Must be injected on an empty stomach, away from food and carbohydrates, ideally before sleep or during a fast. Carbohydrates blunt GH release via somatostatin — taking CJC/Ipa after a meal eliminates most of the pulse.
Cancer Caution
GH and IGF-1 are growth factors. Active malignancy is a contraindication. IGF-1 promotes cell proliferation — the same pathway cancer exploits. Discuss with oncologist if any cancer history.
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