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Growth Hormone Stack 20mg (CJC-1295 No DAC + Ipamorelin) — Research Protocol Reference

SKU GHS20 · Last reviewed 29 July 2026

Research use only. The parameters below document protocols reported in published research and supplier literature. They are not medical advice, not a prescription, and not a recommendation for human use. Advance Peptides products hold no Health Canada or FDA approval. Consult a qualified healthcare professional before acting on any of it.

Dosing Protocol

The Growth Hormone Stack is administered via subcutaneous injection twice daily throughout the active cycle, both peptides drawn into the same micro needle syringe and injected together as a single combined dose.

Both injection windows must be in a fasted, low-insulin state, insulin directly suppresses GH secretion, and dosing in a fed state significantly blunts the GH pulse amplitude from both pathways simultaneously. The bedtime dose is the most important injection of the two, it aligns the combined GH pulse with the natural nocturnal secretion window for maximum recovery and repair.

Do not use this stack if you have active malignancy, diabetic retinopathy, or hypersensitivity to GHRH analogues or GH secretagogues. Monitor fasting glucose during the active cycle, sustained GH elevation can reduce insulin sensitivity at higher doses or over prolonged cycles.

Growth Hormone Stack draw amount reference ⚠️ Syringe note: A 3mL micro needle is required for the entire protocol ⚠️

Recommended Dose Protocol

PhaseDose Per PeptideFrequencyDraw Amount (each)
CJC-1295 (No DAC) 10mg
Weeks 1–2 (intro)~100mcgTwice daily~3 units
Weeks 3–12 (maintenance)~200mcg*Twice daily~6 units
Weeks 13–16 (rest)— rest period —4 weeks— rest period —
Repeat as needed~200mcg*Twice daily~6 units
Ipamorelin 10mg
Weeks 1–2 (intro)~100mcgTwice daily~3 units
Weeks 3–12 (maintenance)~200mcg*Twice daily~6 units
Weeks 13–16 (rest)— rest period —4 weeks— rest period —
Repeat as needed~200mcg*Twice daily~6 units
⚠️ * Titrate up only if needed. Max dose: 200mcg per peptide (approximately 6 units each, drawn into the same micro needle syringe). Begin at the intro dose and hold for the full intro phase. Advance to the maintenance dose only if the intro dose is well tolerated and additional effect is needed. Do not exceed 200mcg per peptide per injection. ⚠️

⚠️ * Titrate up, only if needed, to a maximum of ~300mcg (~9 units) per peptide per injection. ⚠️

CJC-1295 (No DAC) has a half-life of approximately 30 minutes, it fires a sharp GHRH receptor-mediated GH pulse and clears quickly, preserving natural pulsatile rhythm. Ipamorelin has a half-life of approximately 2 hours, it activates the ghrelin receptor through a separate pathway and extends the GH release window. Combined, they converge on pituitary somatotrophs from two distinct receptor pathways simultaneously, producing a synergistic GH pulse confirmed in published research to exceed what either compound generates alone. Twice-daily dosing maintains two deliberate dual-pathway GH pulses aligned with sleep and training windows. The 4-week rest restores pituitary GHRH and ghrelin receptor sensitivity before the next cycle. At 3mL BAC per vial, concentration is 3,333mcg/mL, all draws are approximate and a 3mL micro needle is required throughout.
In biohacking forums, CJC-1295 No DAC and Ipamorelin stacked at 100–300mcg each, drawn into the same syringe and injected twice daily, before bed and fasted in the morning or post-training, is widely considered the entry-level gold standard for peptide-based GH optimisation. It is the most documented stack in the community precisely because the mechanism is well understood and the side effect profile is clean. These are community-derived patterns, not clinical.

Optimised Timing

TimeAction
15–30 min before bed (primary dose)Draw ~3 units Ipamorelin first, then ~3 units CJC-1295 (No DAC) into the same micro needle syringe. Inject SC, abdomen or outer thigh. This dose amplifies the nocturnal GH pulse, the most important injection of the day.
Morning fasted or post-training (second dose)Draw ~3 units Ipamorelin first, then ~3 units CJC-1295 (No DAC) into the same syringe. Inject SC, rotate site from bedtime injection. Must be fasted or at least 2 hours post-meal.
Weeks 3–12 (maintenance)Advance to ~6 units each per injection (~12 units combined) at the same timing windows.
Weeks 13–16Rest period. No injections. Both vials rest simultaneously.

Notes & Best Practices

  • Draw Ipamorelin first, then CJC-1295 (No DAC) into the same syringe: Both peptides are compatible in the same draw and administered as one combined injection. Drawing Ipamorelin first is the standard order, it has the larger injection volume window and sets the base draw before CJC-1295 is added.
  • Label both vials before refrigerating: Both reconstituted solutions are clear and colourless. Labelling immediately after reconstitution, before either vial goes in the fridge, prevents mix-ups. Never reconstitute both vials at the same time without labelling each as you go.
  • Fasted state at both injection windows is not optional: Insulin suppresses GH secretion directly. A fed state at either injection window blunts the dual-pathway GH pulse and reduces the value of both peptides simultaneously.
  • Bedtime dose is the priority: If only one injection window can be maintained, the bedtime dose produces the larger benefit, it amplifies the nocturnal GH pulse that drives the majority of overnight tissue repair and recovery.
  • Effects build over weeks: IGF-1 elevation is cumulative. Meaningful body composition and recovery changes typically become apparent at weeks 4–6. Do not adjust dose based on early cycle response.
  • Monitor fasting glucose at weeks 4 and 8: Sustained dual-pathway GH elevation reduces insulin sensitivity in some individuals. A mid-cycle bloodwork check catches any glucose dysregulation early.
  • Discard each vial at 28–30 days post-reconstitution.

High Dosage Side Effects

Taking too much of either peptide in the Growth Hormone Stack can increase side effects. Signs your dose may be too high:

  • Water retention and puffiness: The most common above-range sign. GH drives fluid retention, particularly in the hands, feet, and face. Reduce both peptides to ~3 units each per injection if persistent beyond the first two weeks.
  • Joint pain or carpal tunnel symptoms: Fluid accumulation in joint capsules from elevated GH. Tingling or numbness in the hands is a reliable signal to reduce dose on both peptides immediately.
  • Headache shortly after injection: Reported at higher doses across GH secretagogue protocols. Reduce both peptides to the previous dose step and allow one week to normalise.
  • Elevated fasting glucose: GH reduces insulin sensitivity at above-range doses. If fasting glucose rises above personal baseline, reduce both peptides and recheck within two weeks.
  • Fatigue or lethargy: Paradoxical fatigue at above-range doses is a documented GH effect. Reduce to intro doses and hold for one week before reassessing.

If any of these occur, reduce both peptides to ~3 units each per injection and hold for one week before attempting to advance again.

Low Dosage Side Effects

A dose may be too low if expected effects are absent after consistent use. Common indicators:

  • No improvement in sleep quality or recovery after 3–4 weeks at maintenance: Confirm both injection windows are fasted and that the bedtime dose is within 30 minutes of sleep. Sleep improvement is the earliest and most consistent indicator of a working stack protocol.
  • No change in body composition after 6 weeks at ~6 units each twice daily: Confirm injection technique, fasted timing at both windows, and that both vials are being drawn correctly. If confirmed, advancing to ~9 units each (~300mcg per peptide) is within the documented range.
  • No water retention at all in the first two weeks: Mild transient fluid retention is expected at therapeutic doses. Complete absence alongside no other effects may indicate underdosing or technique issues, confirm micro needle draw accuracy before adjusting.

If these indicators persist after a full 6-week maintenance phase with correct timing and technique, advancing to ~9 units each per injection (~300mcg per peptide, ~18 units combined) for the remainder of the cycle is appropriate.

⚠️ This is for informational purposes only. For medical advice or diagnosis, consult a professional. ⚠️

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