Abstract The CJC-1295 No DAC 10mg peptide pen contains a highly purified solution of Modified GRF 1-29. Often colloquially referred to as “CJC-1295 without DAC,” this tetrasubstituted peptide is a synthetic analogue of the endogenous Growth Hormone-Releasing Hormone (GHRH). Unlike the standard GHRH(1-29) fragment, which is rapidly degraded by Dipeptidyl Peptidase-4 (DPP-IV) with a half-life of roughly 5-10 minutes, Mod GRF 1-29 incorporates four specific amino acid substitutions (D-Ala, Gln, Ala, Leu) that protect the peptide from enzymatic cleavage. This extends the half-life to approximately 30 minutes—the ideal duration to induce a physiological, high-amplitude pulse of Growth Hormone (GH) without causing the “GH bleed” associated with long-acting DAC (Drug Affinity Complex) variants. This 10mg formulation is the standard reagent for research into pulsatile pituitary stimulation and synergistic secretagogue protocols.

Mechanism and Research Interest

Primary Biological Pathway: Pulsatile GHRH Receptor Agonism

The core utility of Mod GRF 1-29 is its ability to bind to the GHRH Receptor (GHRH-R) on anterior pituitary somatotrophs.

This binding activates the cAMP-PKA signaling cascade, triggering the release of stored GH vesicles. Unlike CJC-1295 with DAC (which binds to albumin for a multi-day half-life), the “No DAC” variant mimics the body’s natural pulsatile rhythm. Research utilizes this 10mg pen to study the benefits of discrete GH pulses on tissue repair and lipolysis, minimizing the risk of receptor downregulation (tachyphylaxis) that can occur with continuous receptor occupancy.

Secondary Research Finding: The Synergistic “Stack” Effect

Mod GRF 1-29 is rarely researched in isolation. It is the primary component of the “synergistic stack” hypothesis. When administered alongside a Ghrelin-mimetic (GHRP, such as Ipamorelin or GHRP-6), the resulting GH release is non-additive; it is synergistic. The GHRH analogue initiates the pulse, while the GHRP inhibits Somatostatin (the “brake” on the pituitary). Researchers use the 10mg pen to quantify this multiplier effect, often observing a 5-10 fold increase in GH secretion compared to either peptide administered alone.

Tertiary Research Finding: Sleep Architecture and Slow-Wave Sleep

Endogenous GHRH is a potent sleep-regulatory substance. Research indicates that GHRH transmission is integral to the promotion of Non-REM (NREM) or Slow-Wave Sleep (SWS). By utilizing Mod GRF 1-29, researchers can investigate the bidirectional relationship between deep sleep and anabolic hormone secretion. The 10mg format allows for precise timing of administration (e.g., at “lights out” in rodent facilities) to measure improvements in delta-wave activity via EEG.

Long-term Genomic and Safety Observations

Safety pharmacology studies regarding Mod GRF 1-29 focus on pituitary health. Because it allows for a “refractory period” between pulses (due to its 30-minute half-life), it is considered the safest GHRH analogue for longitudinal studies. Genomic analysis of pituitary tissue following chronic use verifies that it does not induce the lactotroph or corticotroph hyperplasia sometimes seen with less specific secretagogues.

Product Specifications

• Purity: Validated at >98+% via High-Performance Liquid Chromatography (HPLC). We strictly verify the four amino acid substitutions (Tetrasubstitution) to ensure resistance to DPP-IV degradation.

• Appearance: The 3ml pen contains a clear, colourless, sterile liquid.

• Precision: The pen delivery system ensures accurate volumetric dosing. This is critical for synergy studies, where the molar ratio of GHRH to GHRP must be kept constant (usually 1:1) to achieve the optimal secretory peak.

• Storage: The product must be stored at $2^{\circ}C$ to $8^{\circ}C$.

Storage and Shipping Guidelines

Refrigeration and Shelf Life

The CJC-1295 No DAC 10mg Pen is a peptide that is sensitive to enzymatic degradation once constituted. It must be refrigerated ($2^{\circ}C$ to $8^{\circ}C$). The shelf life is 12 months in the sealed state. Once the pen is accessed, the bacteriostatic environment preserves the solution for 28 days. Given that the absence of the DAC motif removes the albumin-binding protection, maintaining the cold chain is even more critical for this variant than for its long-acting counterpart.

Shipping Stability

We utilise medical-grade thermal packaging. The peptide is stable for up to 72 hours at ambient UK temperatures. However, to minimise structural relaxation of the peptide chain, we recommend selecting the fastest available shipping option.

Freezing Warning

Do not freeze. Freezing can cause the formation of ice crystals that damage the peptide structure. Upon thawing, the solution may become cloudy, indicating precipitation. A frozen pen should be considered compromised and discarded.

Why Choose the Peptide Pro 3ml Pen Format?

The CJC-1295 No DAC 10mg Pen is the standard for Synergistic and Pulsatile Research.

In the field of secretagogues, timing is everything. Trying to coordinate the administration of two different peptides (GHRH + GHRP) using manual syringes leads to timing errors and contamination risks.

Our pre-reconstituted pen ensures that the GHRH component is sterile, stable, and ready for immediate co-administration. It simplifies the workflow for complex “stacking” protocols, ensuring that your data reflects the true synergistic potential of the biological axis.

For researchers building a synergistic protocol, we recommend examining:

• Ipamorelin 10mg: (The ideal selective GHRP partner for a “No Side Effect” stack).

• GHRP-6 10mg: (For comparative studies involving appetite stimulation).

• CJC-1295 with DAC 5mg: (To compare pulsatile vs. continuous “bleed” pharmacokinetics).

Disclaimer

This product is strictly for Research Use Only (RUO). It is not intended for human consumption, injection (e.g., for anti-ageing, bodybuilding, or sleep enhancement), therapeutic use, or diagnostic procedures. The information provided is for educational and scientific reference only. Purchase is restricted to verified research institutions and qualified individuals. Any evidence of intended misuse for human application will result in immediate order cancellation and blacklisting, in compliance with UK research chemical regulations.