“Mod grf 1-29” or “CJC-1295 without DAC” is a peptide used in the realm of biochemistry and medicine, particularly in the field of peptide therapy. This peptide is known for its ability to stimulate the release of growth hormone.

Mod GRF 1-29 (CJC-1295 No Dac)


The name “Mod GRF 1-29” refers to a specific peptide sequence. “Mod” stands for modified, and “GRF” stands for Growth Hormone Releasing Factor. Growth Hormone Releasing Factor is a peptide that signals growth hormone release from the pituitary gland.

1-29 indicates the specific amino acid sequence of the peptide. In the case of Mod GRF 1-29, it means the peptide consists of amino acids 1 to 29 of the full Growth Hormone Releasing Factor sequence.

So, “Mod GRF 1-29” is essentially a modified version of the first 29 amino acids of the Growth Hormone Releasing Factor. The modification is done to increase the peptide’s stability and half-life in the body, allowing for more sustained and effective stimulation of growth hormone release.

The peptide is also known by its other name, CJC-1295 without DAC, further indicating its modified nature. “DAC” stands for Drug Affinity Complex, and the absence of DAC in CJC-1295 without DAC implies that it is a shorter-acting version compared to CJC-1295 with DAC. The modification allows for a more frequent dosing schedule and a more natural pulsatile release of growth hormone.

Product Information

Mod GRF 1-29, also known as CJC-1295 without DAC, is a synthetic peptide used in the field of biochemistry and peptide therapy. Growth hormone is released from the pituitary gland by the Growth Hormone Releasing Factor (GRF) Mod GRF 1-29.

The peptide is typically administered through subcutaneous or intramuscular injection. While it has a relatively short half-life compared to other growth hormone-releasing peptides, it is longer-lasting than the natural GHRH.

Mod GRF 1-29 is often used in combination with other peptides such as GHRP-6 or GHRP-2 to amplify the growth hormone-releasing effects. It is used for various purposes, including stimulating growth hormone release, supporting muscle growth and repair, and potentially aiding in fat loss.

Mechanism of Action

Mod GRF 1-29 (CJC-1295 without DAC) works by stimulating the release of growth hormone (GH) via interacting with the pituitary gland. Here’s a breakdown of the mechanism:

GHRH Mimicry:

A synthetic peptide called Mod GRF 1-29 functions similarly to the natural Growth Hormone Releasing Hormone (GHRH). GHRH is a hormone produced in the hypothalamus that signals the pituitary gland to release growth hormone. {R}

Stimulation of Growth Hormone Release:

When Mod GRF 1-29 is administered, it binds to GHRH receptors on the surface of the pituitary gland. This binding triggers a series of intracellular signaling events. {R}

cAMP Production:

One of the primary signaling pathways involves the activation of adenylate cyclase, an enzyme that leads to the production of cyclic adenosine monophosphate (cAMP) inside the pituitary cells. {R}

Activation of Protein Kinase A (PKA):

Increased cAMP levels activate protein kinase A (PKA), which in turn phosphorylates and activates certain proteins involved in the secretion of growth hormone. {R}

Secretion of Growth Hormone:

The activated signaling pathways ultimately lead to the release of growth hormone from the pituitary gland into the bloodstream. Increased levels of growth hormone also cause the body to produce more Insulin-like Growth Factor-1 (IGF-1), which improves body composition by accelerating the growth of muscular tissue. {R}

Pulsatile Release:

Mod GRF 1-29 is designed to induce a pulsatile release of growth hormone, similar to the natural pulsatile pattern in the body. This contrasts with some other forms of growth hormone-releasing peptides that may lead to a more continuous elevation of growth hormone levels. {R}

Half-Life Extension:

The modification in the peptide’s structure enhances its stability and extends its half-life in the body, allowing for less frequent dosing compared to natural GHRH. {R}

Synergy with GHRP:

Mod GRF 1-29 is often used in conjunction with Growth Hormone Releasing Peptides (GHRPs) like GHRP-6 or GHRP-2 to amplify the overall release of growth hormone. GHRPs work by increasing the production of ghrelin, a peptide that stimulates the release of growth hormone. {R}

MOD GRF 1-29 Benefits

Modified GRF 1-29 is known for its ability to stimulate the release of growth hormone (GH) in the body. Here are some potential benefits associated with Mod GRF 1-29:


1. Increased Growth Hormone Production:

Mod GRF 1-29 stimulates the pituitary gland to release growth hormone. Growth hormone plays a crucial role in various physiological processes, including growth, metabolism, and cellular repair. {R}

2. Muscle Growth and Repair:

Elevated levels of growth hormone can contribute to muscle growth and repair. This can be beneficial for athletes, bodybuilders, and individuals looking to enhance their physical performance and gain lean body mass. {R}

3. Fat Loss:

Growth hormone is involved in the metabolism of fats. Increased levels of growth hormone may contribute to the breakdown of fats for energy, potentially aiding in fat loss. {R}

4. Improved Sleep:

Some users report improved sleep quality as a positive side effect of Mod GRF 1-29. Adequate and quality sleep is essential for overall health and well-being. {R}

5. Joint and Connective Tissue Health:

Growth hormone is known to support the health of joints and connective tissues. This can be particularly beneficial for individuals dealing with joint issues or injuries. {R}

6. Anti-Aging Effects:

Research suggests that increased growth hormone levels may provide anti-aging benefits, such as enhanced skin suppleness and fewer wrinkles.

It’s important to note that while there is scientific research supporting the role of growth hormone in various physiological processes, the use of Mod GRF 1-29 for performance enhancement or anti-aging purposes is a subject of ongoing research. {R}

MOD GRF 1-29 Side Effects

Mod GRF 1-29 (CJC-1295 without DAC) is generally considered safe when used responsibly and under the guidance of a qualified healthcare professional. However, like any medication or peptide, it can potentially have side effects. Some potential side effects of Mod GRF 1-29 include:

Water Retention:

Increased levels of growth hormone can sometimes lead to water retention, causing swelling or edema in certain individuals. Moreover, while growth hormone is generally associated with increased energy, some users may initially experience fatigue or lethargy.

Increased Hunger and fatigue:

Growth hormones can influence appetite, and some users may experience an increase in hunger.

Changes in Blood Sugar Levels:

Mod GRF 1-29 can affect insulin sensitivity, potentially leading to changes in blood sugar levels. Individuals with diabetes or other metabolic conditions should use caution and consult with a healthcare professional.


Is Mod GRF 1-29 Legal?

The supplement is legal to purchase as research chemicals and is not regulated for human consumption yet. Therefore, like other peptides, it can be used for research purposes only, so far.

What is the recommended Dosage?

One daily dose of 100 milligrams of Modified GRF 1-29, taken right before bed, is advised for anti-aging purposes. For experienced users, the dosage can be enhanced to 1-3 times daily. {R}

Where to Buy Mod GRF 1-29 Online?

SPARTAN (Spartan 1 (Mod GRF 1-29/CJC-1295 No Dac + Hexarelin) – BUY FROM PURE RAWZ

While Purerawz sells Modified GRF 1-29 in all forms including liquid as well as stacks, Behemoth Labz has it available in the form of nasal spray.

We recommend Pure Rawz and Behemoth Labz is the best place to buy Mod GRF 1-29. To be the best suppliers of research chemicals, both online stores provide reference materials with every product they sell.


In summary, Mod GRF 1-29 enhances the natural process of growth hormone release by mimicking the action of GHRH. The peptide’s modification improves its pharmacokinetics, and its use is often part of peptide combinations for therapeutic or performance-enhancing purposes. As always, the use of peptides should be approached with caution and under the guidance of qualified healthcare professionals.

About Author

Calvin Ramos

Calvin Ramos is a dedicated research and fitness enthusiast with a passion for helping individuals achieve their health and wellness goals. With years of experience in the fitness industry and a deep commitment to staying up-to-date with the latest research and developments in the field, Calvin brings a wealth of knowledge and expertise to his articles. As a fitness coach and nutrition specialist, Calvin has helped countless clients transform their lives through personalized training programs and evidence-based dietary recommendations. He holds a Bachelor's degree in Exercise Science and Nutrition from University and is certified in personal training and sports nutrition. Calvin's writing reflects his commitment to providing accurate and trustworthy information to empower readers on their fitness journeys. He believes in the power of education and strives to make complex fitness concepts accessible to everyone. His articles are thoroughly researched, drawing on the latest scientific studies and expert insights. When he's not writing or coaching, you can find Calvin in the gym, experimenting with new workout routines, or exploring the latest advancements in fitness technology. His dedication to the field of fitness and wellness is evident in his articles, which aim to inspire and inform readers on their path to a healthier, happier life.