GH Secretagogue Investigational

Ipamorelin + CJC-1295

Also known as: Ipa/CJC, Ipamorelin + Mod GRF, GHRP + GHRH Stack

The gold-standard GH peptide stack — GHRP + GHRH synergy produces 2-5x larger growth hormone pulses than either alone, the most popular anti-aging peptide combination.

Popularity A+
Class GH Secretagogue Combination (GHRP + GHRH)
Half-Life Ipamorelin: ~2h | CJC-1295 no DAC: ~30min (combined pulse window: ~30-60 min)
Form Lyophilized powder (separate vials or pre-mixed blend)
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Ipamorelin + CJC-1295 Combination (two peptides)
Research-Backed User Reports Sourced Updated Mar 2026
// Overview

What is Ipamorelin + CJC-1295?

Ipamorelin + CJC-1295 (no DAC, also called Modified GRF 1-29) is the most widely prescribed growth hormone peptide combination in anti-aging and performance medicine. This pairing leverages the synergistic pharmacology of combining a growth hormone-releasing peptide (GHRP) with a growth hormone-releasing hormone (GHRH) analog.

The combination produces GH pulses 2-5x larger than either peptide alone because they work through two different receptor mechanisms that amplify each other. Ipamorelin activates the ghrelin/GHS receptor on pituitary somatotrophs, while CJC-1295 activates the GHRH receptor. When both receptor types are stimulated simultaneously, the resulting GH pulse is synergistically amplified — far greater than the additive effect of each peptide individually.

This combination is available as separate vials (mix before injection) or as a pre-mixed blend from many peptide vendors. The standard protocol involves 2-3 daily injections (typically morning, post-workout, and before bed) to produce natural GH pulses that support anti-aging, body composition, recovery, and sleep quality.

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// How It Works

How Ipamorelin + CJC-1295 Works

The combination leverages two complementary receptor systems for amplified GH release:

  1. GHRH receptor (CJC-1295) — Activates GHRH receptors on pituitary somatotrophs, providing the primary signal for GH synthesis and release. Think of this as turning on the GH "faucet."
  2. GHS receptor (Ipamorelin) — Activates ghrelin/GHS receptors on the same somatotroph cells, amplifying the GH release triggered by GHRH. Think of this as "opening the faucet wider."
  3. Synergistic amplification — Simultaneous activation of both receptor types on the same cell produces a GH pulse 2-5x larger than either alone. The intracellular calcium and cAMP signaling pathways activated by each receptor converge and amplify.
  4. Selective profile — Ipamorelin provides clean GH release without cortisol/prolactin, while CJC-1295 no DAC maintains natural pulsatile release patterns. The combination preserves physiological GH secretion.
  5. Preserved feedback — Unlike exogenous HGH, this combination respects the body's somatostatin feedback loop, preventing supraphysiological GH levels and maintaining receptor sensitivity.
// Dosage Protocols

Dosage Information (User-Reported)

Disclaimer: Dosage information is compiled from user reports and published research. This is not medical advice. Consult a healthcare professional before use.
Level Dose Frequency Duration
Starter 100mcg Ipa + 100mcg CJC 1-2x daily 2-4 weeks
Standard 200mcg Ipa + 100mcg CJC 2-3x daily (AM/post-WO/pre-bed) 8-12 weeks
Advanced 300mcg Ipa + 100mcg CJC 3x daily 8-12 weeks
Saturation 1mcg/kg each Per injection Standard protocol

What to Expect

Week 1-2

Dramatically improved sleep quality — the hallmark first effect. Vivid, restorative dreams. Mild tingling/head rush post-injection. Recovery from workouts already improving.

Week 3-6

Fat loss beginning, particularly around midsection. Skin quality visibly improving. Nails growing faster. Energy more consistent throughout day. Workout recovery significantly enhanced.

Week 6-12

Visible body recomposition — reduced fat, improved muscle tone and fullness. Skin elasticity notably better. Hair quality improved. Joint comfort better.

Month 3-6

Peak anti-aging benefits. Users report looking and feeling years younger. Sleep quality sustained. Body composition at its best. Many opt for long-term maintenance dosing.

Common Stacks

BPC-157

Recovery Amplification

GH elevation from Ipa/CJC supports tissue repair; BPC-157 provides targeted growth factor healing — the ultimate recovery stack

Tesamorelin

Enhanced GH Base

Adding tesamorelin (another GHRH) for additional sustained GH elevation in severe GH deficiency

MK-677

Oral GH Support

Adding oral ibutamoren for sustained IGF-1 elevation alongside pulsatile Ipa/CJC (advanced users)

// Preparation

Reconstitution & Storage

If using separate vials: Reconstitute each with bacteriostatic water independently. Draw both into the same syringe for combined injection.

If using pre-mixed blend: Reconstitute with BAC water per vendor instructions.

Typical reconstitution: For separate vials — Ipa 5mg + 2.5mL BAC water (200mcg/0.1mL), CJC 2mg + 2mL BAC water (100mcg/0.1mL).

Best on empty stomach — 30min before or 2h after eating. Fats and carbs blunt GH release.

Storage: Lyophilized: 2-8°C. Reconstituted: 2-8°C, use within 21 days. Pre-mixed blends follow vendor storage guidelines.

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// Safety Profile

Side Effects & Safety

Potential Side Effects

  • ! Tingling or head rush post-injection (common, transient)
  • ! Water retention (mild, usually resolves)
  • ! Drowsiness (especially with before-bed dosing)
  • ! Increased hunger (from GH elevation)
  • ! Joint stiffness (if GH elevation is significant)
  • ! Vivid dreams
  • ! Rarely: numbness in extremities, headache
  • ! All side effects are generally mild and dose-dependent

Contraindications

  • ⚠ Active malignancy (GH may promote tumor growth)
  • ⚠ Pregnancy or breastfeeding
  • ⚠ Diabetes (GH affects insulin sensitivity — monitor closely)
  • ⚠ Pituitary tumors or disorders
  • ⚠ History of carpal tunnel syndrome (GH can exacerbate)

Legal & Regulatory Status

Neither peptide is FDA-approved. Both are research peptides. Not controlled substances. The combination is widely prescribed by anti-aging clinics and available from peptide vendors. The most commonly prescribed GH peptide protocol in clinical practice.

// Research

Published Research

// Where to Buy

Top Vendors for Ipamorelin + CJC-1295

Ranked by our review scores. All vendors are independently tested.

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// Related Compounds

Other GH Secretagogue Guides

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BPC-157 Arginate (Oral)

The oral form of BPC-157 — gastric-acid stable and designed for direct GI tract healing. No injections needed…

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TB-500 Fragment

A concentrated fragment of Thymosin Beta-4 focused on the core actin-binding domain — smaller molecule, targeted tissue repair.

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This content is for informational and educational purposes only. Ipamorelin + CJC-1295 is sold for research purposes. Never Natty does not condone or encourage the use of any substance in violation of any laws. Consult a healthcare professional before using any compound discussed on this site.