Ipamorelin + CJC-1295 (No DAC) Blend: Complete Guide to Dosing, Benefits & Results

If you’ve looked into growth hormone peptides, you’ve probably seen this combination everywhere. Ipamorelin and CJC-1295 (no DAC) is the most popular GH secretagogue stack for a reason: it works synergistically to boost growth hormone release while avoiding most of the side effects that plague other peptides in this category.

But there’s a lot of confusion out there. What’s the difference between CJC-1295 with DAC and without? Is Mod GRF 1-29 the same thing? How do you actually dose this stuff? And what results can you realistically expect?

I’ve been researching and writing about peptides for years, and I’ve compiled everything you need to know about this combination in one place. This guide covers the science, the practical protocols, and the real-world results people are getting.

Quick note on sourcing: I use Paramount Peptides for this blend. They carry research-grade peptides with third-party COAs on every batch. Code BRAINFLOW saves you 15%.

Quick Answer: What Is the Ipamorelin CJC-1295 Blend?

What Are Ipamorelin and CJC-1295?

Before diving into how they work together, let’s break down each peptide individually.

Ipamorelin

Ipamorelin is a synthetic pentapeptide (five amino acids) developed by Novo Nordisk. It belongs to a class called Growth Hormone Releasing Peptides (GHRPs), which mimic ghrelin and bind to the ghrelin receptor (GHSR-1a) in your hypothalamus and pituitary gland.

What makes ipamorelin special is its selectivity. A 1998 study in the European Journal of Endocrinology found that ipamorelin is the first and most selective GHRP ever developed. It releases growth hormone without affecting cortisol or ACTH, even at doses over 200 times higher than needed for GH release.

This is a big deal. Other GHRPs like GHRP-6 and GHRP-2 raise cortisol (your stress hormone) and can cause issues with prolactin. Ipamorelin doesn’t touch either one.

CJC-1295 (No DAC) / Mod GRF 1-29

Here’s where the naming gets confusing. You’ll see this peptide called several things:

• CJC-1295 without DAC
• CJC-1295 no DAC
• Mod GRF 1-29
• Modified GRF (1-29)

These are all the same peptide. It’s a 29-amino acid analog of your body’s natural Growth Hormone Releasing Hormone (GHRH). The “Mod” or “Modified” refers to four amino acid substitutions that make it more stable and longer-lasting than natural GHRH.

CJC-1295 works differently than ipamorelin. Instead of binding the ghrelin receptor, it binds the GHRH receptor on your pituitary gland. This stimulates both the production of new growth hormone AND its release.

DAC vs No DAC: What’s the Difference?

This distinction matters a lot for how you use these peptides.

Property	CJC-1295 WITH DAC	CJC-1295 NO DAC (Mod GRF 1-29)
Half-life	5.8-8.1 days	~30 minutes
GH release pattern	Sustained elevation	Pulsatile (natural rhythm)
Dosing frequency	1-2x per week	1-3x daily
Mimics natural GH	Less physiological	More physiological

The no-DAC version is generally preferred for this stack because its short half-life allows for pulsatile GH release that mimics your body’s natural rhythm. The DAC version keeps GH elevated constantly, which is less natural and may cause more side effects.

Why They Work Better Together

The magic of this combination is that ipamorelin and CJC-1295 work through completely different receptor pathways on the same cells.

Think of it like this:

• Ipamorelin (GHRP) hits the ghrelin receptor, telling your pituitary to release stored GH
• CJC-1295 (GHRH analog) hits the GHRH receptor, telling your pituitary to make more GH AND release it

Both receptors exist on the same somatotroph cells in your pituitary. When you activate both at once, you get a synergistic effect that’s greater than additive.

Research by Bowers et al. in the Journal of Clinical Endocrinology and Metabolism demonstrated that combined submaximal doses of GHRH and GHRP produced GH release greater than what you’d expect from adding their individual effects together. A later study by Veldhuis et al. found combined infusion produced 2.0-2.7 fold greater GH secretion than either peptide alone.

There’s also a complementary mechanism at play:

• Ipamorelin suppresses somatostatin (the hormone that inhibits GH release)
• CJC-1295 doesn’t suppress somatostatin on its own
• Together, you get enhanced GH production (from CJC) with reduced inhibition (from ipamorelin)

The practical result: bigger GH pulses that better mimic the natural pattern your body uses, especially during deep sleep.

Benefits (With Evidence Ratings)

Let’s be honest about what the research actually shows versus what’s based on theory or user reports. I’ve rated each benefit by evidence level.

Benefit	Evidence Level	Notes
Increased GH/IGF-1	Research-backed	Well-documented in multiple clinical trials
Improved sleep quality	Research-backed	Multiple studies show GHRH enhances deep sleep in men
Increased collagen synthesis	Research-backed	GH therapy shown to increase collagen production
Fat loss	Mixed	Mechanism supported; human outcome data limited
Muscle growth	Mixed	Mechanism supported; outcomes in healthy adults unproven
Recovery/healing	Contradictory	Some positive studies, some negative
Skin/anti-aging	Anecdotal	No controlled trials; extrapolated from GH research
Cognitive function	Correlational	Intervention studies inconclusive

Sleep Quality (Strong Evidence)

This is one of the best-supported benefits. Marshall et al. (1996) found that GHRH significantly enhanced slow-wave sleep (P < 0.01) and REM sleep (P < 0.05) in healthy men. Multiple studies since the 1990s have confirmed that GHRH increases both the duration and intensity of deep sleep.

Users consistently report this as one of the first noticeable effects, often within the first week.

One important note: there’s evidence of sexual dimorphism here. GHRH appears to improve sleep in men but may actually impair it in some women. If you’re female and notice worse sleep, this could be why.

Body Composition (Mixed Evidence)

The mechanism is solid. Growth hormone stimulates lipolysis (fat breakdown) and promotes lean mass. A 2006 study on CJC-1295 showed it significantly increased GH and IGF-1 levels for extended periods.

An animal study showed ipamorelin stimulated approximately 14% fat mass loss over 12 months in mice. And tesamorelin (a similar GHRH analog) is FDA-approved for reducing abdominal fat in HIV patients with lipodystrophy.

But here’s the reality check: peer-reviewed trials demonstrating superior muscle, fat, or performance outcomes from this specific combination in healthy, resistance-trained adults are currently lacking. The hormonal changes are documented; the physique improvements are extrapolated from those changes and from user reports.

Recovery and Healing (Contradictory Evidence)

This one’s complicated. Some studies are positive:

• Doessing et al. (2010) showed 14 days of GH increased collagen synthesis up to 6-fold
• One study in 406 fracture patients showed significantly shorter healing time
• GH accelerated burn wound healing by 25%

But other studies show no benefit or even potential harm:

• A 2013 study on HGH for rotator cuff repair showed no improvement and potentially detrimental effects
• A 2012 study found GH does not stimulate early healing in rat tendons

The takeaway: don’t count on this combination as a primary healing intervention. It may help recovery, but the evidence is mixed.

What Users Actually Report

Beyond the clinical data, here’s what people commonly notice:

• Better, deeper sleep (usually first week)
• Improved recovery between workouts
• Gradual improvements in body composition over 2-3+ months
• Better skin quality and elasticity
• More energy and sense of wellbeing
• Vivid dreams (common early effect)

One forum user in his 50s reported after 4-5 months: “Within a week or so I could see my abs clearly. Body composition changes are much easier to attain than test alone. Sleep is greatly improved, energy is up, sense of wellbeing heightened. Skin on the back of my hands was really thinning and that has improved.”

Complete Dosing Guide

Standard Doses

Level	Ipamorelin	CJC-1295 no DAC	Frequency
Beginner	100 mcg	100 mcg	1x daily, 5 days/week
Standard	200 mcg	200 mcg	1x daily, 5 days/week
Advanced	300 mcg	300 mcg	1-2x daily, 5 days/week

Most pre-mixed blends come in a 1:1 ratio, which is what you want. If you’re buying them separately, stick to equal amounts of each.

Weight-Based Adjustments

• Under 150 lbs: 100-150 mcg each
• 150-200 lbs: 200 mcg each (standard dose)
• 200-250 lbs: 250-300 mcg each
• Over 250 lbs: 300 mcg each

The Saturation Dose Concept

There’s a concept in peptide dosing called the “saturation dose.” This is the amount needed to fully occupy all available receptors, typically around 1 mcg per kg of bodyweight or approximately 100 mcg for most people.

Going higher has diminishing returns:

• 100 mcg (1x saturation): 100% receptor saturation
• 200 mcg (2x saturation): Only ~27% additional benefit
• 300 mcg (3x saturation): Only ~12% additional benefit beyond that

Doubling your dose doesn’t double your results. You hit diminishing returns quickly. This is why most protocols recommend using the saturation dose more frequently rather than jacking up single doses.

Timing: When to Inject

Best option: Before bed (30-60 minutes prior)

This aligns with your body’s natural GH peak during deep sleep. Your largest natural GH pulse happens around 1:00 AM during Stage 3/4 sleep. Injecting before bed amplifies this effect and enhances slow-wave sleep.

Second option: Morning, fasted

If you’re focused on fat loss, a fasted morning injection before cardio can enhance fatty acid mobilization. GH promotes fat oxidation, and this timing takes advantage of that.

For 2x daily protocols: Morning (fasted) + before bed. Space them at least 6-8 hours apart.

Critical: Fasting Requirements

A lot of people mess up the fasting part. You need to inject in a fasted state for full effect.

• Minimum 2-3 hours after your last meal
• Wait 30-60 minutes after injection before eating
• Avoid carbs and high-fat foods around injection time

Why? Glucose and insulin directly blunt GH release. A carb-heavy meal before or after injection can significantly reduce the GH pulse you’re trying to create.

Cycling

Most protocols follow a 5-on, 2-off weekly pattern (Monday through Friday, weekends off). This helps prevent receptor desensitization and maintains natural GH pulsatility.

For cycle length:

• Conservative: 8 weeks on, 4 weeks off
• Standard: 12 weeks on, 4 weeks off
• Extended: 16 weeks on, 4-8 weeks off

Good news: you don’t need PCT (Post Cycle Therapy). Unlike anabolic steroids, this combination doesn’t suppress your natural hormone production. It works with your body’s systems rather than replacing them.

Side Effects and Safety

Common Side Effects

Most side effects are mild and tend to resolve within the first 1-2 weeks:

• Injection site reactions: Pain, redness, or swelling at the injection site. Rotate sites to minimize.
• Flushing/warmth: Temporary feeling of warmth or flushing, usually lasting minutes to hours.
• Headaches: Common early on, typically resolve with continued use.
• Water retention: Mild bloating or puffiness, may cause slight joint discomfort.
• Fatigue: Some users report tiredness initially, which usually improves.
• Tingling/numbness: Occasional, typically mild and transient.

Ipamorelin’s “Clean” Profile: Verified

The claim that ipamorelin doesn’t raise cortisol or prolactin is strongly supported by research. From the Raun et al. study: ipamorelin did not release ACTH or cortisol at levels significantly different from GHRH alone, even at doses more than 200 times higher than needed for GH release.

Here’s how it compares to other GHRPs:

Peptide	GH Release	Cortisol	Prolactin	Hunger
Ipamorelin	Strong	None	None	Minimal
GHRP-6	Strong	Moderate increase	Moderate increase	Extreme
GHRP-2	Strongest	Moderate increase	Moderate increase	Moderate
Hexarelin	Very strong	Significant increase	Significant increase	Moderate

This is why ipamorelin is the preferred GHRP for most users. You get strong GH release without the hormonal side effects or the ravenous hunger that GHRP-6 is infamous for.

Contraindications

Long-Term Safety

We have to be honest about the limitations here. Most clinical trials on these peptides ran for 28-49 days. Long-term human safety data is limited.

No serious adverse reactions were reported in short-term trials, which is reassuring. But theoretical concerns exist about prolonged GH/IGF-1 elevation and cancer risk, cumulative effects on insulin sensitivity, and potential receptor desensitization.

The 5-on/2-off protocol and cycling approach helps mitigate some of these concerns, but anyone using these peptides long-term should be aware we don’t have decades of safety data.

Practical Guide: Reconstitution, Injection, Storage

Reconstitution

If you’re buying lyophilized (freeze-dried) powder, you’ll need to reconstitute it with bacteriostatic water (BAC water). Do NOT use regular sterile water or tap water.

Standard reconstitution:

• 5mg blend vial + 2 mL BAC water = 2.5 mg/mL (250 mcg per 0.1 mL or “10 units” on an insulin syringe)
• 10mg blend vial + 2 mL BAC water = 5 mg/mL (500 mcg per 0.1 mL)

Proper technique:

1. Let the vial reach room temperature
2. Wipe the stopper with an alcohol swab
3. Draw BAC water into syringe
4. Inject slowly down the inside wall of the vial (do NOT spray directly onto the powder)
5. Gently swirl or roll the vial. DO NOT SHAKE. Shaking can damage the peptide structure.
6. Wait until fully dissolved, then label with the reconstitution date

Storage

Before reconstitution (powder form):

• Ideal: Frozen at -20°C for long-term storage (can last 1-2+ years)
• Acceptable: Refrigerated at 2-8°C
• Keep away from light, heat, and moisture

After reconstitution (liquid form):

• MUST be refrigerated at 2-8°C
• Protect from light
• DO NOT freeze reconstituted solution
• Use within 28-30 days

Injection Technique

Route: Subcutaneous (SubQ). There’s no reason to inject intramuscularly. NEVER inject intravenously (deaths have occurred from IV peptide injection).

Sites: Abdomen (most common, at least 2 inches from navel), thighs, or upper arms. Rotate sites to prevent irritation.

Equipment: Insulin syringes, 29-31 gauge, 0.5-1 inch length.

Steps:

1. Clean vial stopper and injection site with alcohol
2. Draw air equal to your dose, inject into vial, invert vial, draw medication
3. Tap syringe to remove air bubbles
4. Pinch a fold of skin, insert needle at 45-90° angle
5. Inject slowly, wait a few seconds before withdrawing
6. Use a new needle for each injection

Quality matters here. I’ve had readers email me about peptides that didn’t dissolve properly or caused more injection site irritation than they should. Paramount Peptides has been consistently clean on reconstitution in my experience. Code BRAINFLOW for 15% off.

Pre-Mixed Blend vs. Buying Separately

Pre-mixed blend pros:

• Convenience (one vial, one injection)
• Simpler dosing with less room for error
• Often cheaper per dose

Pre-mixed blend cons:

• Can’t adjust the ratio if needed
• Can’t identify which peptide is causing side effects if they occur

Separate vials pros:

• Full control over dosing
• Can isolate side effect sources
• More flexibility

Separate vials cons:

• Two injections or mixing required
• More complex
• Higher total cost

For most people, the pre-mixed blend is the way to go. It’s simpler and the 1:1 ratio works well for the majority of users.

Comparison to HGH, MK-677, and Other Options

There are several ways to boost growth hormone. Here’s how this combination stacks up against the alternatives.

Option	Route	Half-life	FDA Approved	Key Characteristic
Ipamorelin + CJC-1295 no DAC	Injection	30 min – 2 hrs	No	Pulsatile, clean side effect profile
MK-677 (Ibutamoren)	Oral	~24 hours	No	Convenient but causes significant hunger
Recombinant HGH	Injection	2-3 hours	Yes	Most potent but expensive, more side effects
Sermorelin	Injection	10-20 min	Withdrawn 2008	Original GHRH analog, less stable
Tesamorelin	Injection	26-38 min	Yes	Only FDA-approved (for HIV lipodystrophy)
CJC-1295 with DAC	Injection	5.8-8.1 days	No	Weekly dosing but less natural GH pattern

vs. Recombinant HGH

Actual HGH is the most direct approach. You’re injecting the hormone itself rather than stimulating your body to produce more. It’s more potent and produces more predictable results.

But there are significant downsides:

• Cost: HGH runs $80-120+ per week versus $10-15 per week for peptides
• Suppression: Exogenous HGH suppresses your natural production
• Side effects: Higher risk of water retention, joint pain, carpal tunnel
• Pattern: Creates sustained supraphysiologic levels rather than natural pulses

Peptides work with your body’s natural systems. They stimulate your pituitary to produce more GH while maintaining normal pulsatile patterns and feedback loops. The results are more modest than HGH, but so are the risks and costs.

vs. MK-677 (Ibutamoren)

MK-677’s biggest advantage is that it’s oral. No injections required. It also has a 24-hour half-life, so once-daily dosing works fine.

The major downside: hunger. MK-677 significantly stimulates appetite, which users describe as “extreme” and “can drive you nuts.” This makes cutting or dieting very difficult. Ipamorelin has minimal appetite effects by comparison, making it much easier to use during a calorie deficit.

MK-677 also tends to cause more water retention and can affect blood glucose more significantly.

vs. Sermorelin

Sermorelin was the original synthetic GHRH (1-29) and was actually FDA-approved until it was withdrawn in 2008 for business reasons (not safety). CJC-1295 no DAC is essentially an improved version with four amino acid modifications that make it more stable and resistant to enzymatic breakdown.

If you can get sermorelin through a doctor, it’s a legitimate option. But Mod GRF 1-29 has better bioavailability and is more commonly available through research peptide sources.

What to Expect: Week-by-Week Timeline

Results vary by individual, but here’s a general timeline based on user reports:

Week 1-2:

• Improved sleep quality (often the first thing people notice)
• Vivid dreams
• Possibly some water retention or mild headaches as your body adjusts

Week 2-4:

• Better recovery between workouts
• Increased energy and sense of wellbeing
• Sleep benefits continue
• Early side effects typically resolve

Week 4-8:

• Visible improvements in body composition starting
• Improved skin quality
• Fat loss becoming noticeable (with proper diet)
• Better workout performance and endurance

Week 8-12+:

• Significant body composition changes
• Cumulative benefits continue building
• Peak effects typically reached around 3-6 months

Important reality check: this isn’t a magic bullet. You still need proper diet and training to see body composition changes. What the peptides do is make your efforts more effective and your recovery faster. As one user put it: “Body composition changes are much easier to attain.” Just make sure you’re using quality peptides — I use Paramount Peptides for this blend (code BRAINFLOW for 15% off).

Where to Buy Ipamorelin CJC-1295 Blend

Product quality matters enormously with peptides. Research has found that 30% of online peptides contain incorrect amino acid sequences, and 65% exceed endotoxin safety limits. A product can have 95% chemical purity and still harbor dangerous contamination. I’ve tried multiple sources over the years, and there’s a reason I keep coming back to the same one.

Paramount Peptides (My Recommendation)

Paramount Peptides is my go-to source for this blend and has been for a while now. They carry research-grade peptides with proper quality verification, and I’ve had consistently good experiences across multiple orders.

Their 2x Blend comes with 5mg CJC-1295 (no DAC) and 5mg Ipamorelin per vial, which is exactly the 1:1 ratio you want. One vial lasts about 3-4 weeks at standard dosing (200mcg each per day), making it convenient and cost-effective.

What I like about Paramount:

• Third-party COAs on every batch — not just manufacturer testing, but independent lab verification with HPLC purity analysis and mass spectrometry confirmation
• US-based with fast shipping — usually 2-4 days to my door, no customs headaches
• Consistent quality — I’ve ordered from them multiple times and haven’t had a single issue with potency or reconstitution
• Research-grade purity — their peptides consistently test at 98%+ purity
• Responsive customer service — they actually answer questions

Several readers have emailed me about their results with Paramount, and the feedback has been overwhelmingly positive. One guy who’d been burned by sketchy vendors before said Paramount was the first source where he actually felt the peptides working as expected.

What to Look For in Any Peptide Source

If you go with a different vendor, here’s what to check:

• Third-party COA: Certificate of Analysis from an independent lab, not just the manufacturer
• HPLC purity ≥98%: Lower purity means more impurities
• Mass spectrometry: Confirms correct molecular identity
• Endotoxin testing: Should be below 0.25 EU/mL
• Batch-specific testing: COA should match your vial’s lot number

Red flags to avoid: no COA available, purity below 95%, unusually low prices, cryptocurrency-only payment, no verifiable reviews, or Gmail addresses instead of company email domains.

Legal Status

USA: These peptides are NOT FDA-approved for human use, bodybuilding, or anti-aging. They’re available as “research chemicals” for laboratory use only. Doctors can prescribe them off-label through compounding pharmacies, but the gray market research peptides aren’t technically legal for human consumption.

Sports: Both ipamorelin and CJC-1295 are prohibited at all times under WADA rules (S2: Peptide Hormones, Growth Factors). If you compete in tested sports, these are off-limits.

Frequently Asked Questions

The Bottom Line

Ipamorelin + CJC-1295 (no DAC) is the gold standard GH secretagogue stack for good reason. It effectively boosts growth hormone through dual receptor pathways, has the cleanest side effect profile of any GHRP option, and works with your body’s natural pulsatile rhythm rather than against it.

The best-supported benefits are improved sleep quality, better recovery, and gradual body composition improvements over 3-6 months. The research on direct fat loss and muscle gain outcomes is less robust, but the mechanism is sound and user reports are consistently positive.

This isn’t a replacement for proper diet and training. It’s a tool that makes your efforts more effective. Set realistic expectations, commit to at least 3 months, and prioritize sourcing quality products from vendors with legitimate third-party testing.

For the blend, I recommend Paramount Peptides. Research-grade, third-party tested, and consistent quality. Code BRAINFLOW saves you 15%.

References

1. Raun K, et al. Ipamorelin, the first selective growth hormone secretagogue. Eur J Endocrinol. 1998. PMID: 9849822
2. Bowers CY, et al. On the actions of the growth hormone-releasing hexapeptide, GHRP. J Clin Endocrinol Metab. 1990. PMID: 2116446
3. Veldhuis JD, et al. Determinants of GHRH-GHRP synergy in men. Am J Physiol. 2009. PMID: 19567527
4. Teichman SL, et al. Prolonged stimulation of growth hormone and insulin-like growth factor I secretion by CJC-1295. J Clin Endocrinol Metab. 2006. PMID: 16352683
5. Marshall L, et al. Growth hormone-releasing hormone increases sleep and REM sleep in healthy young men. Neuroendocrinology. 1996. PMID: 8675573
6. Alba M, et al. Once-daily administration of CJC-1295 produces sustained increases in GH and IGF-1. J Clin Endocrinol Metab. 2006.
7. Ionescu M, Frohman LA. Pulsatile secretion of growth hormone persists during continuous stimulation by CJC-1295. J Clin Endocrinol Metab. 2006.
8. Thomsen BB, et al. Ipamorelin pharmacokinetics and pharmacodynamics in healthy volunteers. Pharm Res. 1999.
9. Doessing S, et al. Growth hormone stimulates the collagen synthesis in human tendon and skeletal muscle. J Physiol. 2010.